You perform a backup using the following BACKUP command: RMAN> BACKUP AS COMPRESSED BACKUPSET DATABASE; Which statement is true of this command?（）
- A A different procedure is required to restore a database from compressed backups
- B The AS COMPRESSED clause of the BACKUP command provided by RMAN is used to create compressed backup sets and image copies.
- C Using this command to create backups minimizes the bandwidth consumed
- D Using this command to create backups improves the performance of the backup proce