单项选择题DuetotheinternalFiberChanneloverEthernetarchitectureoftheCiscoUCS,whatdoeseachVSANrequire?()
A.it is carried on only 1 vhba per ucs system
B.it has a qos policy in order to maintain traffic priority
C.there is a supporting vsan to carry the fcoe traffic
D.there is a dedicated VLAN to carry the FCoEtraffic