.Your companys virtual environment includes Windows Server 2008 R2 Hyper-V servers. You manage the environment by using Microsoft System Center Virtual Machine Manager （VMM） 2008 R2. You need to provide a user with the ability to perform only the Create， Delete， Start， Stop， Pause， Resume， and Shut Down virtual machine （VM） management tasks on your host servers .  What should you do？（）

• A、In VMM，create a Self-Service user role.
• B、In VMM，create a Delegated Administrator user role.
• C、In VMM，assign the Local Administrator permission for the host servers to the user.
• D、In Authorization Manager， create a role on the users client computer and add the user to this role.