The backup retention policy is configured as RECOVERY WINDOW 2. You executed the following command in Recovery Manager （RMAN） against your database：  RMAN> REPORT OBSOLETE;  What would you see in the output？（）

• A、a list of all the expired backups and copies
• B、a list of all those files that have been deleted in the last two days
• C、a list of all those files that have been recovered within the last two days
• D、a list of backups and copies that are outside the range covered by the current retention policy