You have a vSphere deployment consisting of ESXi 5.1 hosts and a vCenter Server 5.5.
You are deploying NSX and begin by creating a vSphere Distributed Switch (vDS) on the
vCenter Server using default settings. What is the next step in preparing the deployment for
NSX?

A.
Use the option Add and Manage Hosts.

B.
Deploy NSX on each host.

C.
Use the option Add host networking.

D.
Upgrade the ESXi hosts.