Many financial analysts consider an upward trend in a firm’s current ratio <<a sign of improving liquidity.>>
A- a sign of
B- as a sign of
C- to be a sign of
D- a sign of their
E- as being a sign of
I chose C but the explanation says: This answer choice uses the unidiomatic and redundant construction "to consider X to be Y."
Correct answer is A
The original sentence uses the correct idiom "to consider X Y" and draws a logical and structurally parallel comparison between two nouns: "a trend" and "a sign."
This make sense, my question is consider never goes with "to"? consider to is always wrong?
Thanks