With ACP 4200, what is mandatory to ensure Avaya Aura® High Availability across the two Data Centers?

A. A single vCenter Server that manages both Data Centers.

B. Network connectivity to and in between the two Data Centers.
C. Identical compute servers in both Data Centers.
D. The same VLANs in both Data Centers.

Reference: https://downloads.avaya.com/css/P8/documents/101054952 (9)