----What is the price of petrol these days-----Oh it sharply since last month. A.

问题补充：

------- What is the price of petrol these days

-------Oh, it sharply since last month.

A. is raised

B. has risen

C. has arisen

D. is increased

答案：

A. is raised

B. has risen

C. has arisen

D. is increased

解析：本题考查时态的用法。根据since last month 可知应用现在完成时。