You executed the following command in Recovery Manager (RMAN):
RMAN> RESTORE CONTROLFILE;
Which operation must you perform before this command is executed?
A.
back up the control file to trace
B.
bring database to the MOUNT state
C.
open a connection to the RMAN recovery catalog, which contains the RMAN metadata for the target database
D.
set the database ID (DBID), but only if the DB_NAME parameter associated with the target database is unique in the recovery catalog