问题:
A . Lists all datafiles created in the last three days that are not backed up.
B . Lists all datafiles not recoverable based on the current retention criteria.
C . Lists all datafiles not backed up in the last three days. The datafile is not recoverable.
D . Lists all datafiles that need to be backed up due to unrecoverable operations.
E . Lists all datafiles not backed up in the last three days. It does not imply that the datafile is not recoverable.
● 参考解析
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