In a Private Cloud Environment, Which of the Following Is

Multiple Choice

In a private cloud environment, which of the following is the BEST way to update 20 VMs with the same patch that has been regression tested and approved for rollout?

A) Automate the distribution of the patch and use an orchestration tool to roll it out.
B) Roll out the patch manually to the 20 VMs and reboot the system.
C) Deploy the patch to ten VMs for testing and then install it on the remaining VMs.
D) Install the patch on as many VMs as possible during the next maintenance window.