Due to the internal Fiber Channel over Ethernet architecture of the Cisco UCS ,what does each VSANrequire?（）

• 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