Sentence Correction

Announcing that one of its key successes had been the recent well-received beta launch, the Internet startup claimed it would introduce several new products to the web community during the next quarter.


A
its key successes had been the recent
B
its key successes has been the recently

C
its key successes is the recently
D
their key successes is the recent
E
their key successes had been the recent


Thanks in adv !

will pick option A

A is the right option why? because
D and E is out becasue internet startup is singular and thus use of "their" is wrong
C is out because "well-recieved" shows that something happened in the past thus the use of present tense is wrong. Now something that happened in the past need past perfect tense. the use of "recent" is very important here. Recent (adjective) modifying noun beta launch. "Recently (adverb) well-recieved" changes the meaning of the sentence and that is wrong.