OverlayTransportVirtualization（OTV）providesanoverlaythatenablesLayer2connectivitybetweenseparateLayer2domains，whilekeepingthesedomainsindependentandpreservingthefaultisolation，resiliency，andload-balancingbenefitsofanIP-basedinterconnection.WhichstatementsaretrueaboutOTVAdjacencyServer？（）

A．AdjacencyServerisrequiredwhenOTVisdeployedwithunicast-onlytransport. B．AdjacencyServerisrequiredwhenOTVisdeployedwithmulticast-enabledtransport. C．EachOTVdevicewishingtojoinaspecificOTVlogicaloverlayneedstofirstregisterwiththeAdjacencyServer. D．EachOTVdevicetryingtojoinaspecificOTVlogicaloverlayneedstobeconfiguredasanAdjacencyServer.