You configure a Windows Server 2008 R2 Hyper-V server with several virtual machines (VMs).
A software vendor releases a software update for an application that runs on only one of the VMs.
You need to plan a strategy that enables you to install and test the update without interrupting application availability and without corrupting data.

What should you do first?

A.
Create a snapshot of the affected VM.

B.
Enable the Windows Volume Snapshot Service on the Hyper-V server.

C.
Export the VM.

D.
Enable the Windows Volume Snapshot Service on the affected VM.

Explanation: