Which two statements are true about RMAN duplexed backups? (Choose two.)
A. For performing duplexed backups, the parallelism for the device must be set equal to the number of copies.
B. It is only supported for backups to tape via media management interface.
C. It is not supported for image copies.
D. Duplex backups can be performed on either disk or media, but cannot be performed on media and disk simultaneously.
E. Duplex backups can contain only data files and control files.
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