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