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24¡¢Which four are true about duplicating a database using Recovery Manager (RMAN)? (Choose four.)

A. Duplication can be done by having the auxiliary database instance pull backup sets from the target database instance.

B. A connection to an auxiliary instance is always required.

C. A subset of the target database can be duplicated.

D. A new DBID is always created for the duplicated database.

E. A connection to the recovery catalog instance is always required.

F. A backup of the target database is always required.

G. Duplication can be done by having the target database instance push copies to the auxiliary database instance.

H. A connection to the target database instance is always required.