SAT grammar question

<p>One time a candidate for the Democratic nomination for United States president in 1972, Shirley Chisholm won 152 delegates before withdrawing from the race.
(A) One time
(B) She was
(C) Being
(D) To be
(E) As</p>

<p>Answer is E, but why cant it be C.</p>

<p>College board says:
It avoids the error of the original by using the preposition “As” to indicate the capacity in which Shirley Chisholm “won 152 delegates.”</p>

<p>Lastly, when is being right and when is it wrong</p>

<p>I can’t quickly think of any situation where “being” can be used as in choice (C).</p>

<p>“Being a candidate …” This is attempt to use “being” as a conjunction, which it isn’t.</p>

<p>One possible correct use of being in the spirit of the above sentence is:</p>

<p>“Jane is being so very difficult today.” In this use, the simpler “Jane is so difficult today.” works. The insertion of “being” serves to emphasize Jane’s mood.</p>