You have enabled backup optimization in RMAN. You issue the following RMAN command to configure a redundancy-based retention policy:CONFIGURE RETENTION POLICY TO REDUNDANCY 3;Which statement is true?（）A. The command fails because you cannot configure a redundancy-based retention policy when backup optimization is enabledB. Backup optimization is performed, but RMAN considers the redundancy-based retention policy when it determines which datafiles should be backed upC. Backup optimization is permanently disabledD. Backup optimization is temporarily disabled because a redundancy-based retention policy is specified
You have enabled backup optimization in RMAN. You issue the following RMAN command to configure a redundancy-based retention policy:CONFIGURE RETENTION POLICY TO REDUNDANCY 3;Which statement is true?（）
A. The command fails because you cannot configure a redundancy-based retention policy when backup optimization is enabled
B. Backup optimization is performed, but RMAN considers the redundancy-based retention policy when it determines which datafiles should be backed up
C. Backup optimization is permanently disabled
D. Backup optimization is temporarily disabled because a redundancy-based retention policy is specified
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