Which command do you use to check for block corruption by validating the database?

A.
RMAN> VALIDATE CHECK LOGICAL

B.
RMAN> VALIDATE BACKUP

C.
RMAN> VALIDATE CORRUPT BLOCKS

D.
RMAN> VALIDATE DATABASE

Explanation:
http://docs.oracle.com/cd/B28359_01/backup.111/b28270/rcmvalid.htm#BRADV89563