请赐教正确答案！

GWD1-Q2:

By merging its two publishing divisions, the company will increase their share of the country’s $21 billion book market from 6 percent to 10 percent, a market ranging from obscure textbooks to mass-market paperbacks.

1. their share of the country’s $21 billion book market from 6 percent to 10 percent, a market ranging

2. from 6 percent to 10 percent its share of the $21 billion book market in the country, which ranges

3. to 10 percent from 6 percent in their share of the $21 billion book market in the country, a market ranging

4. in its share, from 6 percent to 10 percent, of the $21 billion book market in the country, which ranges

5. to 10 percent from 6 percent its share of the country’s $21 billion book market, which ranges

E

A, their指代不正确

B, which ranges修饰的对象变成country了

C，用了一个ranging,动词优于分词

D，和B的错误一样

但这个在GWD中的答案是B,我也认为是E,迷惑！