Which statement is correct regarding the difference between Multisite and Multiway conferencing?

A.	Multisite requires configuration on the endpoint, whereas Multiway requires the Multiway options key to be installed.
B.	Multisite requires the presence of a multipoint control unit, whereas Multiway relies on the endpoint conferencing capability.
C.	Multisite is used to conference in multiple sites, whereas Multiway is intrasite multipoint conferencing.
D.	Multisite requires the Multisite options key to be installed and configured at the endpoint, whereas Multiway requires a Cisco TelePresence Video Communications Server and a centralized multipoint control unit.