题目选项分析

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

By merging its two publishing divisions, the company will increase to 10 percent from 6 percent its share of the country's billion book market, which ranges from obscure textbooks to mass-market paperbacks.