Which statement is true about the DUPLICATE command?

Examine the RMAN commands:
RMAN> CONNECT TARGET “sbu@prod AS SYSBACKUP”;
RMAN>CONNECT AUXILIARY “sbu@dup_db AS SYSBACKUP”;
RMAN >DUPLICATE TARGET DATABASE TO dup_db
FROM ACTIVE DATABASE
PASSWORD FILE
SECTION SIZE 400M;
Which statement is true about the DUPLICATE command?

A.
It fails because there is no connection to a recovery catalogue.

B.
It fails because no parallel channels are allocated for the auxiliary database.

C.
It succeeds only if the target database is in MOUNT state.

D.
It succeeds and creates multisection backup sets that are used for active database duplication.

Explanation: