In what conditions or deployment mode, you can make two servers running at the same time?

All Avaya Aura System Manager redundancy options all can use two servers. Although a server is designed as primary and another server is designed as secondary, it is possible to keep them in the active state at the same time.

In what conditions or deployment mode, you can make two servers running at the same time?
A . Geo-redundancy is deployed
B . Run in "Split WAN" mode
C . Run in high availability mode of deployment
D . Large deployment model with load balancing

Answer: B