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 channelB: It backs up two copies of data files to tape and disk, and two copies of archived log file on tapeC: It backs up the data files and archived log files to disk, making two copies of each data file and archived log fileD: 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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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

请帮忙给出正确答案和分析，谢谢！