Youhavecreatedaresourceplan,DB_PLAN,usingDBMS_RESOURCE_MANAGER.CREATE_SIMPLE_PLANandyouwanttoimposearestrictiononutilizationofresourcesbythedatabaseusers.Whichstepmustbeperformedbeforeyoucanstartusingtheresourceplan?()
A.assignuserstoconsumergroups
B.settheresourceplanfortheinstance
C.configureasimpleresourceplanandspecifyplandirectives
D.configureacomplexresourceplanandspecifyplandirectives