Your company has an Active Directory domain. A server named Server2 runs Windows Server 2008. All client computers run Windows Vista.  You install the Terminal Services role，Terminal Services Web Access role service，and Terminal Services Gateway role service on Server2.  You need to ensure that all client computers have compliant firewall， antivirus software，and antispyware. Which two actions should you perform？（）

• A、Configure Network Access Protection （NAP） on a server in the domain.
• B、Add the Terminal Services servers to the Windows Authorization Access domain local security group.
• C、Add the Terminal Services client computers to the Windows Authorization Access domain local security group.
• D、Enable the Request clients to send a statement of health option in the Terminal Services client access policy.