may I ask CR here?

[weiw49]

Fish currently costs about the same at seafood stores throughout Eastville and its surrounding suburbs. Seafood stores buy fish from the same wholesalers and at the same prices, and other business expenses have also been about the same. But new tax breaks will substantially lower the cost of doing business within the city. Therefore, in the future, profit margins will be higher at seafood stores within the city than at suburban seafood stores.

For the purposes of evaluating the argument, it would be most useful to know whether.

A more fish wholesalers are located within the city than in the surrounding suburbs.
B Any people who currently own seafood stores in the suburbs surrounding Eastville will relocate their businesses nearer to the city
C The wholesale price of fish is likely to fall in the future
D Fish has always cost about the same at seafood stores throughout Eastville and its surrounding suburbs.
E Seafood stores within the city will in the future set prices that are lower than those at suburban seafood stores.

OA is E,why not D?

I think if cost is different in the future, the profit margins can't be calculate.The only way to infer the conclusion above( profit margins will be higher ) is to make a assumption that the cost will be the same.
I think the sentence that "Seafood stores buy fish from the same wholesalers and at the same prices, and other business expenses have also been about the same" doesn't mean anything in the future. Am I right ?

[tim]

As per the forum rules, we need a verifiable source for the problem before we can deal with this question. If the question is not one of ours or one that is copyright-free, we will have to delete the question.

[KakakkdeK400]

Very good and informative exchange .. Thank you!

[weiw49]

As per the forum rules, we need a verifiable source for the problem before we can deal with this question. If the question is not one of ours or one that is copyright-free, we will have to delete the question.

um.... sorry~this is not an offical question~ neither from OG nor from manhattan...

[RonPurewal]

...so what's the source?