[求助]OG－171(so as to)与OG－176(in a mere)问题，请指点

OG-171. In 1527 King Henry VIII sought to have his marriage to Queen Catherine annulled so as to marry Anne Boleyn.

(A) so as to marry

(B) and so could be married to

(C) to be married to

(D) so that he could marry

(E) in order that he would marry

D我认为没错，但是不知道为什么A错了，

OG解释：A does not specify who is to marry Anne.但我认为主语就是King Henry VIII，so as to 前后主语一致，那么就是King Henry VIII  is to marry Anne.

不知道我的想法有什么不对，请NN指点

OG－176. As a result of the ground-breaking work of Barbara McClintock, many scientists now believe that all of the information encoded in 50,000 to 100,000 of the different genes found in a human cell are contained in merely three percent of the cell’s DNA.

(E) the 50,000 to 100,000 different genes found in a human cell is contained in a mere

其他选项我都可以排除，不过不明白in a mere是什么意思？

171. so as to 前面还有 Queen Catherine, 也有可能是 so as to 的逻辑主语。

176.mere  adj.

used to emphasize how small or unimportant something or someone is

Here is a tool for you:

http://pewebdic2.cw.idm.fr/

首先谢谢joe gg的耐心解答

1.但是两个动作都是一个人发出的不是吗？如果说so as to本身就是代表同一主语发出的动作，那么还会产生歧义吗？谢谢

2.也就是说in a mere three percent这里mere是adj.修饰a three percent咯？

非常感谢joe gg给的这个工具，真的非常好！