YouaremaintainingyourdatabaseinOracle10g.YouareperformingthebackupbyusingtheBACKUPASBACKUPSETcommandattheRMANprompt.WhichfilecannotbebackedupbyusingtheBACKUPASBACKUPSETcommand?()
A. Datafiles
B. Currentcontrolfile
C. Serverparameterfile(spfile)
D. Passwordfile