Your companys network includes an Active Directory Domain Services （AD DS） domain. You manage Hyper-V servers by using Microsoft System Center Virtual Machine Manager （VMM） 2008 R2. You install Windows Server 2008 R2 Datacenter （Server Core Installation） on 100 new servers， and you add the servers to the domain. You need to add the Hyper-V role to the 100 new servers. You must accomplish this goal by using the least amount of administrative effort. What should you do？（）

• A、Run the Add-WindowsFeature RSAT-Hyper-V PowerShell cmdlet.
• B、In Server Manager， use the Add Roles Wizard to add the Hyper-V role.
• C、In the VMM Administrator Console， use the Add Hosts Wizard to individually add each new server to VMM.
• D、In the VMM Administrator Console， use the Add Hosts Wizard to simultaneously add all 100 new servers to VMM.