Which two statements are true about a duplicate database that is

Which two statements are true about a duplicate database that is created by using the DUPLICATE command in RMAN?

A.It is created with the same database identifier(DBID. as that of the target database.

B.It is a copy or a subset of the target database.

C.It is created by using backups and archived redo log files from the target database.

D.It is opened in RESTRICT mode after a duplicating operation.

正确答案是AC