What happens if the master host is unable to communicate with a slave host over the management network?

In a vSphere HA enabled cluster, what happens if the master host is unable to communicate with a slave host over the management network?
A. The master host uses datastore heartbeating.
B. VMs are rebooted by vSphere HA.
C. The host is dropped from the cluster.
D. A new master host is elected.