请教白勇语法全解上44页52题的解释

RT,其中C选项书中的解释为contrary to后面必须加抽象名词修饰全句，而GS,EP,and other expatiate是实义动词。。。这个抽象名词是针对这道题说还是什么意思？还是凡是contrary to后面都要加抽象名词？

1.        Unlike Gertrude Stein, Ezra Pound, and other expatriates, William Carlos Williams insisted that poets honor their own regions and employ specifically American rhythms.

(A) Unlike Gertrude Stein, Ezra Pound, and other expatriates, William Carlos Williams insisted

(B) Although Gertrude Stein, Ezra Pound, and other expatriates did not, William Carlos Williams’ insistence was

(C) Contrary to Gertrude Stein, Ezra Pound, and other expatriates, it was William Carlos Williams who insisted

(D) As opposed to what Gertrude Stein, Ezra Pound, and other expatriates did, William Carlos Williams was to insist（A）

(E) While Gertrude Stein, Ezra Pound, and other expatriates did not, William Carlos Williams was insistent