Sentence Correction

The Coast Guard recently redesigned channel markers in the Chesapeake Bay to accommodate large numbers of ospreys, whose huge nests formerly obstructed the lights.
(A) numbers of ospreys, whose huge nests
(B) numbers of ospreys, their huge nests
(C) amounts of ospreys, the huge nests of which
(D) nests of ospreys they
(E) numbers of ospreys, and their huge nests


I have read somewhere that "numbers of" is incorrect to use.

Please look at the respective options and explain.

Numbers of is fine I think. IMO the answer is A.

Amount should be used for non-count nouns, so C is out as ospreys can be counted.

B is an awkward run-on sentence

D is also awkward, and nests of ospreys changes the meaning of the sentence.

E is an awkward sentence too.

Hmmm...Got it...Thnx..

As per Manhattan GMAT Verbal

Numbers of is incorrect

moreover, i never came up with any of the kind "numbers of"

gmat740 wrote:As per Manhattan GMAT Verbal

Numbers of is incorrect

moreover, i never came up with any of the kind "numbers of"

"numbers of " is not incorrect by itself. "The numbers of" and "A numbers of" is wrong.

The below sentence is taken from GMAC website.

"Each test center operates on its own schedule and can accommodate varying numbers of test takers throughout the day."

if the adjective is modifying the numbers ,then i guess the usage is right.
"large numbers of"
"varying numbers of"

-Correct me if i am wrong.