You need to recommend a solution to minimize the amount of disk space used for the checkpoint of VM1

Your network contains an Active Directory domain named contoso.com. The domain contains a server
named Server1. Server1 runs Windows Server 2012 R2 and has the Hyper-V server role installed.
On Server1, you create and start a virtual machine named VM1. VM1 is configured as shown in the
following table.

You plan to create a checkpoint of VM1.
You need to recommend a solution to minimize the amount of disk space used for the checkpoint of
VM1.
What should you do before you create the checkpoint?

A.
Decrease the Maximum RAM.

B.
Convert Disk1.vhd to a dynamically expanding disk.

C.
Run the Stop-VM cmdlet.

D.
Run the Resize-VHD cmdlet.

Explanation:
For checkpoints created when the virtual machine is stopped
The checkpoint contains the state of the hard disks only.
For checkpoints created when the virtual machine is running
The checkpoint contains the state of the hard disks and the data in memory.Note: A checkpoint saves the state of each virtual hard disk that is attached to a virtual machine and all
of the hard disk’s contents, including application data files. For virtual machines on Hyper-V and
VMware ESX Server hosts, a checkpoint also saves the hardware configuration information. By creating
checkpoints for a virtual machine, you can restore the virtual machine to a previous state.