Your highly available virtual environment includes Windows Server 2008 R2 Hyper-V servers.
You are developing a strategy to apply Hyper-V updates.
You need to ensure that you can deploy updates while minimizing server downtime.

What should you do on each Hyper-V server?

A.
Migrate the VMs, apply the update to the Hyper-V server, apply the update to each VM, and then migrate the VMs back to the Hyper-V server.

B.
Pause the VMs, apply the update to the Hyper-V server, and then apply the update to the VMs.

C.
Apply the update to the Hyper-V server, and then apply the update to the VMs.

D.
Take a snapshot of the VMs, and then apply the update to the Hyper-V server.

Explanation: