Before Doing a Change on a VM, a Systems Administrator

Multiple Choice

Before doing a change on a VM, a systems administrator wants to ensure there is an easy and fast way to rollback if needed. The change and testing should take approximately two hours. Which of the following is the EASIEST way to meet this requirement?

A) Create a snapshot on the hypervisor.
B) Make an on-demand, incremental backup to a VTL.
C) Make an on-demand, full backup to a secondary location.
D) Create a snapshot on a remote storage array.