單項選擇題

假設用戶正在執(zhí)行UPDATE操作，此時用以下哪種方法可以關閉數(shù)據庫（）

A.SHUTDOWN或SHUTDOWN IMMEDIATE或SHUTDOWN ABORT
B.SHUTDOWN或SHUTDOWN NORMAL或SHUTDOWN TRANSACTIONAL
C.SHUTDOWN NORMAL或SHUTDOWN ABORT或SHUTDOWN IMMEDIATE
D.SHUTDOWN或SHUTDOWN IMMEDIATE或SHUTDOWN TRANSACTIONAL
E.SHUTDOWN ABORT或SHUTDOWN IMMEDIATE或SHUTDOWN TRANSACTIONAL

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