You have enabled backup optimization in RMAN. You issue the following RMAN command to configure a redundancy-based retention policy:<br /> CONFIGURE RETENTION POLICY TO REDUNDANCY 3;<br /> 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