Which pdadmin “server task” based steps will accomplish this?

An IBM Security Access Manager V9.0 Reverse Proxy has a stateful junction to a Portal application called “/wps” There is no web server in front of Portal. This junction has three Portal servers defined behind it. The Portal team needs to do maintenance on each of the three servers. The team wants to accomplish with least impact to end users.

Which pdadmin “server task” based steps will accomplish this?
A . Stop a server, have Portal team apply maintenance, bring server online-repeat for the other two servers.
B . Delete a server, have Portal team apply maintenance then add server back-repeat for the other two servers.
C . Take a server offline, have Portal team apply maintenance, bring server online- repeat for the other two servers.
D . Throttle a server, ensure activity has ceased for that server, have Portal team apply maintenance, bring server online-repeat for the other two servers.

Answer: C