When using the GUI to configure a Cisco Unified Videoconferencing 3500 Series Multipoint Control Unit, which two parameters must be set in order for the MCU to register with a gatekeeper? (Choose two.)

A.
Use the RAS registration method with the video gateway

B.
Set the Registration method, use multicast or specify the IP Address and port number

C.
Set the Registration of the gateway name and domain name

D.
Set TTL in the gateway

E.
Place a check in the SCCP check box