Company.comhasdecidedtoimplementvirtualhostsintheirwebserver.ThecurrentestimateistocreatesixvirtualhostswithuniqueURL’sandIPaddresses.ThesolutionisgoingtousetheIPaliasingfactioninHACMP.Howmanyresourcegroupsarerequiredtosupportthisconfiguration？（）
A.1
B.2
C.6
D.7