V5.x系统中，删除动环网管Sybase数据库scanbus表中前置机ID为1且总线ID为3的SQL语句应该是（）

A.delete*from scanbus where qzj_id=1 and scanbus_id=3

B.deletefrom scanbus whereqzj_id=1 and scanbus_id=3

C.del*from scanbus where qzj_id=1 and scanbus_id=3

D.delfrom scanbus where qzj_id=1 and scanbus_id=3