Whatdoestheoutputonthisreportindicate？（）RMAN>reportneedbackup；RMANretentionpolicywillbeappliedtothecommandRMANretentionpolicyissettoredundancy1Reportoffileswithlessthan1redundantbackupsFilebkpsName50C：\ORACLE\ORADATA\ORCL\MY_DATA_01.DBF

A.Themy_data_01.dbfdatafileiscorruptedandneedstoberestored.

B.Themy_data_01.dbfdatafilehasnotyetbeenbackedup.Thisreportdoesnotimplythatthedatainthedatafilecannotberecovered.

C.Themy_data_01.dbfdatafilehasnotyetbeenbackedup.Thisreportimpliesthatthedatainthedatafilecannotberecovered.

D.Themy_data_01.dbfdatafilenolongermeetstheretentioncriteriaforbackups.

E.Datafile5ismissing.