Which statements are true regarding the new Persistent CONFIGURATION FEATURE IN RMAN?

Which statements are true regarding the new Persistent CONFIGURATION FEATURE IN RMAN? (Choose two)

A.
It allows you to set the retention period of backups.

B.
It remember the last backup command you used so that you can rescheule it easily.

C.
It enables you to store your channel attribute settings in the Recovery catalog with each script.

D.
It enables you to store the settings for channel attributes so that you do not have to specify them in each backup o restore command

Explanation:
When implementing an RMAN-based backup strategy, you can use RMAN more effectively if you understand the more common options available to you. Many of these can be set in the RMAN environment on a persistent basis, so that you do not have to specify the same options every time you issue a command.To simplify ongoing use of RMAN for backup and recovery, the RMAN lets you set a number of persistent configuration settings for each target database. These settings control many aspects of RMAN’s behavior when working with that database, such as backup retention policy, default destinations for backups to tape or disk, default backup device type (tape or disk), and so on.

REF: Oracle(r) Backup and Recovery Basics 10g Release 2 (10.2), 3-7 and 3-8