单选题

You issue the following command on the RMAN prompt.   REPORT NEED BACKUP DAYS 5;   Which statement is true about executing this command?()  

A It will display a list of files that need incremental backup

B It will display a list of files that need backup after five days

C It will display a list of files that were backed up in the last five days

D It will display a list of files that have not been backed up in the last five days

E It will apply the current retention policy to determine the files that need to be backed up

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