酸站车间工艺规程规定六站硫酸控制范围为（）

A.小
B.大
C.相等
D.有时大有时小

A.131±1g/l
B.131±2g/l
C.132±1g/l
D.130±2g/l

A.131±1g/l
B.131±2g/l
C.130±1g/l
D.130±2g/l