What does the output on this report indicate?()  <br /> RMAN> report need backup; <br /> RMAN retention policy will be applied to the command <br /> RMAN retention policy is set to redundancy 1 <br /> Report of files with less than 1 redundant backups <br /> File #bkps Name <br /> 5 0 C:\ORACLE\ORADATA\ORCL\MY_DATA_01.DBF  
A、 The my_data_01.dbf datafile is corrupted and needs to be restored.
B、 The my_data_01.dbf datafile has not yet been backed up. This report does not imply that the data in the datafile can not be recovered.
C、 The my_data_01.dbf datafile has not yet been backed up. This report implies that the data in the datafile can not be recovered.
D、 The my_data_01.dbf datafile no longer meets the retention criteria for backups.
E、 Datafile 5 is missing.