In the Cisco Unified Contact Center Enterprise solution with clustering over the WAN, which statement about the Cisco Un

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In the Cisco Unified Contact Center Enterprise solution with clustering over the WAN, which statement about the Cisco Unified Communications Manager peripheral gateway duplex pair is true?

A. Each side of the peripheral gateway pair (side A and side B) must be configured to point to a local and a remote CTI Manager across the WAN from the PG location.
B. The peripheral gateway private network may be shared with any other private connections-- peripheral gateways or call routers/loggers.
C. The peripheral gateway may use the highly available WAN connection between the sites (visible network) for all traffic--visible and private.
D. The peripheral gateways must be co-located at one side or the other of the Cisco Unified Communications Manager cluster.