At a minimum, what must an administrator configure in the CUCM for Cisco TelePresence Multipoint Switch?

A.
SIP trunk and route pattern

B.
H .323 gateway and route pattern

C.
H.323 gateway, router pattern, route list and route group

D.
SIP trunk, route pattern, route list and route group

E.
H.323 gateway, route pattern and route group

F.
route pattern, route list and route group