You want to upgrade a cluster with two members to VPN-1 NGX R65. The SmartCenter Server
and both members are version VPN-1/Firewall-1 NG FP3, with the latest Hotfix. What is the
correct upgrade procedure?
(1) Change the version, in the General Properties of the gateway-cluster object.
(2) Upgrade the SmartCenter Server, and reboot after upgrade.
(3) Run cpstop on one member, while leaving the other member running. Upgrade one member
At a time, and reboot after upgrade. (4)Reinstall the Security Policy.

A.
1, 3, 2, 4

B.
2, 3, 1, 4

C.
2, 4, 3, 1

D.
3, 2, 1, 4

Explanation: