How can the administrator solve the problem?

A company has a wireless network that contains a cluster of four Aruba 7030 Mobility Controllers (MC) managed by a Mobility Master (MM) located in the data center. The company has Aps deployed that are nearing the capacity of the cluster. The administrator wants to increase AP capacity.

How can the administrator solve the problem?
A . Add a new controller to the Mobility Master.
B . Add a Virtual Mobility Controller to the existing cluster.
C . Add a 7030 controller to the existing cluster.
D . Add a 7220 controller to the existing cluster.

Answer: B