What is the result of this command？（） RMAN> Report need backup days 3；
- A Lists all datafiles created in the last three days that are not backed up.
- B Lists all datafiles not recoverable based on the current retention criteria.
- C Lists all datafiles not backed up in the last three days. The datafile is not recoverable.
- D Lists all datafiles that need to be backed up due to unrecoverable operations.
- E Lists all datafiles not backed up in the last three days. It does not imply that the datafile is not recoverable.