V5.x系统中，为防止Sybase数据库日志溢出，需要采取以下什么措施（）

A.通过Sybase中master数据库下的段来查看
B.通过Sybase中master数据库下的存储过程来查看
C.通过Sybase中动环网管数据库如：zxcms，下的段来查看
D.通过Sybase中动环网管数据库如：zxcms，下的存储过程来查看

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

A.select ##version
B.select ##version from master
C.select @@version from master
D.select @@version