单选题

In the parameter file of your production database， the CONTROL_FILE_RECORD_KEEP_TIME parameter is set to 31. What would be the impact of this setting on the backup that is being performed by using Recovery Manager （RMAN）？（）

A The backup would be retained on the media for 31 days.

B The backup would be maintained in the recovery catalog for 31 days.

C The backup metadata would be retained in the control file for 31 days.

D The backup metadata would be maintained in the recovery catalog for 31 days.

E Automatic backups of the control file will be retained in the flash recovery area for 31 days.

略

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