An administrator is deploying a pool of virtual desktops and receives the following message when testing a desktop connection from a View Client machine:
The Desktop Currently Has No Desktop Sources Available.
The administrator has confirmed that:
The desktops are built and are visible in the View Administrator console.
The desktops display a Agent Unreachable status in the View Administrator.
After logging in to the vCenter Server, what should the administrator ensure to troubleshoot the issue?

A.
The virtual desktops are powered on.

B.
There are no Memory reservations.

C.
There are no CPU reservations.

D.
The View Composer service is running.