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[单选题]

You issued the following commands to configure setting in RMAN;

Then you issued the following command to take the backup:

RMAN> BACKUP DATABASE PLUS ARCHIVELOG;

Which statement is true about the execution of the above command?（）

A . The backup will terminate because the FORMAT clause was not configured for the channel

B . It backs up two copies of data files to tape and disk, and two copies of archived log file on tape

C . It backs up the data files and archived log files to disk, making two copies of each data file and archived log file

D . It backs up the data files and archived log files to tape, making two copies of each data file and archived log file

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