Which statement is true about the compression algorithms that RMAN can use?

You want to use RMAN to create compressed backups.
Which statement is true about the compression algorithms that RMAN can use?

A.
The BZIP2 compression algorithm consumes more CPU resources than the ZLIB compression
algorithm.

B.
The ZLIB compression algorithm consumes more CPU resources than the BZIP2 compression
algorithm.

C.
The ZLIB compression algorithm provides maximum compression and produces smaller
backups than the BZIP2 compression algorithm.

D.
Only the BZIP2 compression algorithm can be used to make compressed backups to disk.

Explanation:
The BZIP2 compression algorithm consumes more CPU resources than the ZLIB compression
algorithm. The BZIP2 compression algorithm provides for optimum compression, but tends to use
more CPU resources than the ZLIB compression algorithm. The ZLIB compression algorithm is
optimized for performance and uses less CPU resources. You should note that the COMPATIBLE

initialization parameter must be set to 11.0.0 or higher to use the ZLIB compression algorithm. The
option that states the ZLIB compression algorithm consumes more CPU resources than the BZIP2
compression algorithm is incorrect. The BZIP2 compression algorithm consumes more CPU
resources. The option that states the ZLIB compression algorithm provides maximum compression
and produces smaller backups than the BZIP2 compression algorithm is incorrect. The BZIP2
compression algorithm provides maximum compression and produces smaller backups than the
ZLIB compression algorithm. The option that states only the BZIP2 compression algorithm can be
used to make compressed backups to disk is incorrect. The ZLIB compression algorithm can also
be used to make compressed backups to disk.