What are three reasons a CUCM cluster is recommended for Cisco TelePresence systems? (Choose three. )

A.
The endpoints are able to connect faster.

B.
Easier to manage Cisco TelePresence systems related CUCM upgrades.

C.
Can prioritize Cisco TelePresence traffic separate than other video traffic.

D.
Some endpoints do not work with Cisco IP Phones.

E.
Production environment may not be running minimum CUCM version required Cisco TelePresence.

F.
Easier to create trunks with a dedicated CUCM cluster.