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.
Flashback log files

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

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

D.
Backups that have become obsolete