（多选题）
What are the two advantages of RMAN Block Media Recovery （BMR） over file-level recovery？（）
A BMR lowers the mean time to recover （MTTR）.
B BMR supports point-in-time recovery of individual data blocks.
C BMR enables you to use incremental backups for block recovery.
D BMR enables recovery even when the database is not mounted or open.
E BMR enables you to use proxy backups to perform block media recovery.
F BMR enables increased availability of data during recovery because the data file requires a recovery can remain online.
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