Which two statements regarding you configuring a traversal server and traversal client relationship are true?

A.	VCS supports only the H.460.18/19 protocol for H.323 traversal calls.
B.	VCS supports either the Assent or the H.460.18/19 protocol for H.323 traversal calls.
C.	VCS supports either the Assent or the H.460.18/19 protocol for SIP traversal calls.
D.	If the Assent protocol is configured, a TCP/TLS connection is established from the traversal client to the traversal server for SIP signaling.
E.	A VCS Expressway located in the public network or DMZ acts as the firewall traversal client.