An administrator is creating a service profile but receives an error when applying to a blade. The administrator checks the faults tab of the service profile and finds the following error （Refer to the exhibit）. What is the cause of this error？（）

• A、 vNIC has a Fibre Channel QoS policy assigned
• B、 vHBA is assigned to a "best-effort" QoS policy
• C、 vHBA has no QoS policy assigned
• D、 vHBA is assigned to an incorrect VSAN
• E、 vNIC has been assigned to an FCoE VLAN