Which statement is true about a VIP address in a Junos Pulse Access Control Service cluster?

Which statement is true about a VIP address in a Junos Pulse Access Control Service cluster?

A.
A VIP is required when all endpoints connected to the cluster use the Junos Pulse client.

B.
A VIP is required when all endpoints connected to the cluster use the Odyssey Access Client.

C.
A VIP is required when all endpoints connected to the cluster use agentless access.

D.
A VIP is required when connecting a firewall enforcer to the cluster.