Which command must be executed on the primary system prior to deleting RDF environment
BACKUPA, which will no longer be used?

A.
TMFCOM; STOP TMF; DELETE TMF

B.
RDFCOM BACKUPA; STOP RDF; DELETE RDF

C.
RDFCOM BACKUPA; STOP RDF; UNPINAUDIT

D.
RDFCOM BACKUPA; STOP UPDATE; UNPINAUDIT