A company needs to expand the disk capacity of some business virtual machines due to business development, but it is found that several disks do not support capacity expansion. Which of the following is not a possible cause of the failure?

A company needs to expand the disk capacity of some business virtual machines due to business development, but it is found that several disks do not support capacity expansion. Which of the following is not a possible cause of the failure?
A . The disk is a shared disk
B . The disk is a differential disk
C . The virtual machine is in the "stopped" state
D . The virtual machine is in maintenance mode

Answer: C