A new update has been released for ESXi hosts. Which tasks must the administrator
perform in the vCloud Suite and/or vCenter Server prior to applying the update?

A.
Enter maintenance mode on the host in vCenter, update the host.

B.
Enter maintenance mode on the host in vCenter. Unprepare the host in vCloud
Automation Center web console.

C.
vMotion all resources from the host in vCenter. Unprepare the host in vCloud Automation
Center web console.

D.
Disable the host. Redeploy all virtual machines for the host.