What should you do?

Your company has a main office and a branch office. The main office is located in Amsterdam. The branch office is located in New York. Each office has a data center. The offices connect to each other by using a high-bandwidth, low-latency wide area network (WAN) link.

You have a Skype for Business Server 2015 infrastructure in both of the locations. The solution supports 5,000 users.

You plan to deploy a persistent chat infrastructure.

You need to ensure that persistent chat rooms remain available if a data center fails.

What should you do?
A . Create one Persistent Chat Server pool that contains one active chat server and one standby chat server.
B . Create one Persistent Chat Server pool that contains two active chat servers.
C . Create two Persistent Chat Server pools that each contains one active chat server.
D . Create two Persistent Chat Server pools that each contains one active chat server and one standby chat server.

Answer: B