弱问新prep210

210 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.
A.    their share of the country's $21 billion book market from 6 percent to 10 percent, a market ranging
B.    from 6 percent to 10 percent its share of the $21 billion book market in the country, which ranges
C.    to 10 percent from 6 percent in their share of the $21 billion book market in the country, a market ranging
D.    in its share, from 6 percent to 10 percent, of the $21 billion book market in the country, which ranges            
E.    to 10 percent from 6 percent its share of the country's $21 billion book market, which ranges
答案E，这里的to 10 percent from 6 percent是插入语么？插入语的话前后应该用逗号隔开吧，像这样读起来怪怪的。