A customer is interested in deploying Cisco VT Advantage cameras along with H.323 video room systems at the facility. How should MRGs be configured to support IP phones, Cisco VT Advantage cameras, and H.323 video room systems with Cisco IPVC 3511 Multipoint Control Units?

A.
One MRG would be required to support the IP phones, Cisco VT Advantage cameras, and H.323 video room systems.

B.
Two MRGs would be required, one to support IP phones, and one to support Cisco VT Advantage cameras and H.323 video room systems.

C.
Three MRGs would be required, one to support IP phones, one to support Cisco VT Advantage cameras, and one to support the H.323 video room systems.

D.
Four MRGs would be required, one to support conferencing and transcoding resources, one to support IP phones, one to support Cisco VT Advantage cameras, and one to support H.323 video room systems.