Cisco WiSM controllers have multiple interface types. Which three statements about the interface types of the controller

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Cisco WiSM controllers have multiple interface types. Which three statements about the interface types of the controllers are true? (Choose three.)

A. The service-port interface is the default interface for in-band management of the controller.
B. If the service port is in use, then the management interface must be on a different subnet than the service port.
C. You cannot ping the AP-manager interface.
D. The virtual gateway interface is used to support mobility management.
E. The management interface is used as the source IP address for all Layer 3 communications between the controller and the lightweight APs.
F. On the Cisco WiSM, the management interface is used to synchronize the supervisor engine and the Cisco WiSM.