Your network contains a Network Load Balancing (NLB) cluster named NLB01.
NLB01 contains two servers named Node1 and Node2 that run Windows Server 2008 R2.

Node1 and Node2 are configured as shown in the following table:

You need to install Windows updates on Node1 to meet the following requirements:

Prevent new connections to Node1 while the updates are installed.

Provide connected users with the ability to complete their session on Node1 before the updates are installed.

What should you do first?

A.
From Network Load Balancing Manager, right-click Model and click Drainstop

B.
From Network Load Balancing Manager, right-click Node1 and click Suspend

C.
From the Services console, right-click Workstation and click Pause.

D.
From the Services console, right-click Server and click Pause.