SC大全-987-84 ；请问SC大全987的讨论稿在哪里呀?

84. Although it was once funded entirely by the government, the Victoria and Albert
                    Museum was one of the first of Britain’s national museums seeking support from corporations and private donors and to increase income by increasing attendance.

(A) one of the first of Britain’s national museums seeking support from

(B) one of Britain’s first national museums seeking support of

(C) among Britain’s first national museums to seek support of

(D) among the first of Britain’s national museums to seek support from（D）

(E) among Britain’s first national museums that have sought the support of

这里答案D中的among 怎么看着不顺眼呀？

among 不是三者以上的之间吗？
为什么这里 among the first (我认为这里的the first 只有一个吧？,那为什么可以说among the first ;

个人认为， among 后面一般是加复数名词的才对呀？)

请NN们帮忙

看原句意思one of the first of Britain’s national museums 说明the first的不只有一家，再说没有人规定第一只能有一个啊，也有并列第一的啊

我的思路

因为first限定词的位置不能变，所以上来就排除BCE，只剩下AD

又因为to do 优于doing，选D