请教一道GWD题，很绕啊！

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

为什么此题该选B呢，A和C明显不对，但是D为什么不对呢，我觉得which 就近修饰country是不对的，但是没的选，因为E虽然就近修饰market可以，但是E的句子结构混乱。我觉得很迷茫！