大全176——E选项怎么错了？

176.        Beyond the immediate cash flow crisis that the museum faces, its survival depends on if it can broaden its membership and leave its cramped quarters for a site where it can store and exhibit its more than 12,000 artifacts.

(A) if it can broaden its membership and leave

(B) whether it can broaden its membership and leave

(C) whether or not it has the capability to
                broaden its membership and can leave

(D) its ability for broadening its membership and leaving（B）

               (E) the ability for it to broaden its membership and leave

E选项是the ablity to do sth.,请问为何不对？