What does multiway provide in a telepresence solution?

A.
System with a single monitor can emulate dual monitors

B.
Non-multisite endpoints can create multisite calls by transferring the cat to a multipoint
control unit.

C.
Calls through an ISDN gateway will use more than one channel, if available

D.
All dual-monitor system in a three-way call will show video of both of the other systems
on different monitors..