Incomputersecurity,AAAstandsforauthentication,authorizationandaccounting.WhichoptionabouttheAAAauthenticationenabledefaultgroupradiusenablecommandiscorrect?()

A.Iftheradiusserverreturnsanerror，theenablepasswordwillbeused

B.Iftheradiusserverreturnsa’failed’message，theenablepasswordwillbeused

C.ThecommandloginauthenticationgroupwillassociatetheAMauthenticationtoaspecifiedinterface

D.Ifthegroupdatabaseisunavailable，theradiusserverwillbeused