What is the procedure to update a Junos Pulse Access Control Service cluster?

A.
Update the active device first, then go to the Maintenance section and select Push Config
Update to update the other nodes.

B.
Update any node, and once it reboots, let it push the newer service package to the other nodes.

C.
Update the passive node first, then manually reboot it. Repeat this process for the other node.

D.
Disconnect every node one at a time, reboot, and then repeat the process with the other nodes.