单项选择题

通常焦炭硫分每增加0.1%,焦炭耗量增加(),生铁产量约下降()。

A.1.2%~1.5%1.5%
B.1.2%~1.5%2%
C.1.2%~2.0%2%
D.1.2%~2.0%1.5%