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The EMP table exists in your schema. You want to execute the following query: SELECT ename, sal FROM emp AS OF TIMESTAMP (SYSTIMESTAMP - INTERVAL '6' MINUTE) WHERE ename = 'ALLEN'; What are the minimum requirements for the statement to execute successfully? （）
A:ARCHIVELOG mode must be enabled
B:Row Movement must be enabled for the table
C:FLASHBACK must be set to ON for the database
D:The UNDO_MANAGEMENT parameter must be set to AUTO
E:The UNDO_RETENTION parameter must be set appropriately

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出自：Oracle认证

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