Scenario:
A Citrix Administrator has updated all of the machines within a delivery group. After the update,
one application stops working. The administrator was directed by an IT manager to revert all
machines to the previous image. How can the administrator revert all machines to the previous
image?

A.
Delete the snapshot associated with the template virtual machine.

B.
Delete the difference disk of the virtual machines with the delivery group.

C.
Select Rollback machine update for the delivery group.

D.
Select Rollback machine update for the Machine Catalog.