单项选择题
A.Error：Wrongparameterfoundat‘^’position B.Error：Incompletecommandfoundat’^’position C.Error：Toomanyparametersfoundat’^’position D.Error：Ambiguouscommandfoundat‘^’position
A.1 B.2 C.3 D.4
A.ProtocolIDB.InterfaceIDC.SubnetIDD.GlobalRoutingPrefix