To provide firewall traversal, which components are needed?
A.
1 Cisco TelePresence Video Communication Server Control and 2 Cisco TelePresence
Video Communication Server Expressways
B.
2 Cisco TelePresence Video Communication Server Expressways
C.
1 Cisco TelePresence Video Communication Server Control and 1 Cisco TelePresence
Video Communication Server Expressway
D.
2 Cisco TelePresence Video Communication Server Controls