Which two files are removed automatically if the space is required in the FRA as per the retention policy?

You configured the Flash Recovery Area (FRA) for your database. The database instance is running in ARCHIVELOG mode. The default location for the archived redo log files is the Flash Recovery Area.
Which two files are removed automatically if the space is required in the FRA as per the retention policy? (Choose two.)

A.
Archived redo log files that have multiple copies in a different archive location and not backed up

B.
Flashback log files

C.
User managed backups of the data files and control files

D.
Backups that have become obsolete