Which three configuration options are currently unsupported when configuring the Cisco Unified Border
Element for videoconferencing? (Choose three)

A.
RSVP synchronization of H.323 calls.

B.
Multiple logical channels per call leg.

C.
H.323-to-SIP video traffic.

D.
FECC support.

E.
Video endpoints with different H.245 versions.

F.
Dual video/picture-in-picture.

G.
DSCP marking for video streams.