sc -A hypothesis known as Cetartiodactyla

[kartik1979]

A hypothesis known as Cetartiodactyla theorizes that whales and hippopotamuses evolved from a common ancestor, therefore the closest living relative of the whale is the hippopotamus and vice versa.

A. A hypothesis known as Cetartiodactyla theorizes that whales and hippopotamuses evolved from a common ancestor, therefore the closest living relative of the whale is the hippopotamus and vice versa.
B. A hypothesis known as Cetartiodactyla theorizes that whales and hippopotamuses evolved from a common ancestor; therefore the closest living relative of the whale is the hippopotamus and the closest living relative of the hippopotamus is the whale.
C. A hypothesis known as Cetartiodactyla theorizes that whales and hippopotamuses evolved from a common ancestor; therefore, they are each other’s closest living relatives.
D. A hypothesis known to be Cetartiodactyla theorizes that whales and hippopotamuses evolved from a common ancestor; therefore the closest living relative of the whale is the hippopotamus and vice versa.
E. A hypothesis known to be Cetartiodactyla theorizes that whales and hippopotamuses evolved from a common ancestor; therefore they are each other’s closest living relatives

Ans that i Chose is B but Correct ans as per source( 800 tests) is C, i cant understand why C is right pls help

[RonPurewal]

A hypothesis known as Cetartiodactyla theorizes that whales and hippopotamuses evolved from a common ancestor, therefore the closest living relative of the whale is the hippopotamus and vice versa.

A. A hypothesis known as Cetartiodactyla theorizes that whales and hippopotamuses evolved from a common ancestor, therefore the closest living relative of the whale is the hippopotamus and vice versa.
B. A hypothesis known as Cetartiodactyla theorizes that whales and hippopotamuses evolved from a common ancestor; therefore the closest living relative of the whale is the hippopotamus and the closest living relative of the hippopotamus is the whale.
C. A hypothesis known as Cetartiodactyla theorizes that whales and hippopotamuses evolved from a common ancestor; therefore, they are each other’s closest living relatives.
D. A hypothesis known to be Cetartiodactyla theorizes that whales and hippopotamuses evolved from a common ancestor; therefore the closest living relative of the whale is the hippopotamus and vice versa.
E. A hypothesis known to be Cetartiodactyla theorizes that whales and hippopotamuses evolved from a common ancestor; therefore they are each other’s closest living relatives

Ans that i Chose is B but Correct ans as per source( 800 tests) is C, i cant understand why C is right pls help

ugly. yeah, i don't like (c) either.

of these choices, (b) has the most grammatical integrity, but it's just so ... long and bulky.
one better way to say this would be "each of the two species is the closest living relative of the other."

there are a whole host of other problems with these choices, though. here are three:
* Cetartiodactyla is not a "hypothesis"; it's the name of a species. (wrong in all 5 choices)
* A hypothesis can't theorize. Only a person can theorize. (wrong in all 5 choices)
* The gmat ALWAYS, ALWAYS, ALWAYS starts the underline at the first place where there's actually a difference between the choices. therefore, if this were a real problem, the underline would not include "A hypothesis known", which is the same in all 5 choices.

this is a terrible, terrible source. stay away!