Whatistheendresultofthesecommandsiftheyaresuccessful？（）RMAN>showretentionpolicy；RMANconfigurationparametersfordatabasewithdb_unique_nameORCLare：CONFIGURERETENTIONPOLICYTOREDUNDANCY1；defaultBackupdatabasetag=gold_copyplusarchivelogtag=gold_copydeleteinput；Backupdatabasetag=silver_copyplusarchivelogtag=silver_copydeleteinput；

A.Attemptingtorestoresilver_copywillfail.

B.Attemptingtorestoregold_copywillfail.

C.Bothbackupswillbeavailableforrestorewithoutquestion.

D.Attemptingtorestoregold_copymayormaynotsucceed.

E.Youwillnotbeabletorestoreeithergold_copyorsilver_copy.