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 business operations and without corrupting data.

What should you do first?

A.
Export the VM.

B.
Create a snapshot of the affected VM.

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

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

Explanation:

We can use freezed VHD to raise up test VM. Export without shutdown is impossible. And shutdown is interruption of business operations.