You manage Hyper-V host servers and virtual machines （VMs） by using Microsoft System Center Virtual Machine Manager （VMM） 2008 R2. You grant a user the Delegated Administrator user role. You need to provide the user with the ability to manage VMs through the VMM Self-Service Portal. What should you do？（）

• A、In VMM， grant the user the Self-Service user role.
• B、In VMM， grant the user the Administrator user role.
• C、Enable the Integrated Windows Authentication option for the VMM Self-Service Portal.
• D、Enable the Single sign-on for Terminal Services option for the VMM Self-Service Portal.