Note: This question is part of a series of questions that use the same similar answer choices.
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You have a Hyper-V host named Server1 that runs Windows Server 2016. Server1 has a
dynamically expanding virtual hard disk (VHD) file that is 900GB The VHD contains 400GB of free
space. You need to reduce the amount of disk space used by the VHD. What should you run?

A.
the Mount-VHD cmdlet

B.
the Diskpart command

C.
the Set-VHD cmdlet

D.
the Set-VM cmdlet

E.
the Set-VMHost cmdlet

F.
the Set-VMProcessor cmdlet

G.
the Install-Windows Feature cmdlet

H.
the Optimize-VHD cmdlet

Explanation:
https://technet.microsoft.com/en-us/library/hh848458.aspx