请教新东方section 4

第一个不明所以的题：

23.   A huge flying reptile that died out with the dinosaurs some 65 million years ago, the Quetzalcoatlus had a wingspan of 36 feet, believed to be the largest flying creature the world has ever seen.

(A) believed to be

(B) and that is believed to be

(C) and it is believed to have been

(D) which was, it is believed,（C）

(E) which is believed to be

why?why?why?

why not E?

如果是E,a wingspan of 36 feet,就成了WHICH的修饰对象 ,逻辑意思就不对 .

这个好象是大全上的题目 ,哥哥可以去看 .

哦，谁能告诉我大全的答案在哪里？