A customer owns three Codian 5300 MCUs with several video endpoints. Users complain that they are getting multipoint control unit port capacity errors when scheduling video conferences in Cisco TMS. What can be done to correct these errors automatically?

A.	Enable the Automatic MCU Cascading option in the Cisco TMS Conference Settings.
B.	Install a Cascading option key on the Cisco TMS server.
C.	Install a Cisco TelePresence Conductor server.
D.	Install cascaded multipoint control units.