室外低压配电线路和设备验电宜使用( )。

A、=MID(D333,SEARCH("A",D333),SEARCH("B",D333)-SEARCH("A",D333)-1)
B、=MID(D333,SEARCH("B",D333),SEARCH("C",D333)-SEARCH("B",D333)-1)
C、=MID(D333,SEARCH("C",D333),SEARCH("D",D333)-SEARCH("C",D333)-1)
D、=MID(D333,SEARCH("B",D333),SEARCH("C",D333)-SEARCH("B",D333)-1)
E、=MID(D333,SEARCH("C",D333),SEARCH("D",D333)-SEARCH("C",D333)-1)
F、=MID(D333,SEARCH("d",D333),99)