When a vSphere administrator attempts to remediate a host with Update Manager, the host
is unable to enter maintenance mode. Which condition is likely preventing the host from
entering maintenance mode?

A.
A virtual machine is configured with a local .vswp file.

B.
A virtual machine is powered off and cannot be migrated to another host.

C.
A virtual machine on the host has a removable device connected.

D.
A virtual machine on the host is configured to use Fault Tolerance.