If an auto attendant has a numeric ID of 543 and the Cisco TelePresence MCU has a prefix of 62
and a domain of cisco.demo, which two of these will be registered on the Cisco TelePresence
VCS, assuming that SIP and H.323 registration have been selected? (Choose two.)

A.
62543

B.
543@cisco.demo

C.
543

D.
62543@cisco.demo

E.
543@62.cisco.demo