Your network contains an Active Directory forest named contoso.com. The forest functional level
is Windows Server 2012. The forest contains a single domain. The domain contains multiple HyperV hosts. You plan to deploy guarded hosts. You deploy a new server named Server22 to a
workgroup. You need to configure Server22 as a Host Guardian Service server. What should you
do before you initialize the Host Guardian Service on Server22?

A.
Install the Active Directory Domain Services server role on Server22.

B.
Obtain a certificate.

C.
Raise the forest functional level.

D.
Join Server22 to the domain.