You have a server that runs Windows Server 2008. The server has the Terminal Services Gateway （TS Gateway） role service installed.  You need to provide a security group access to the TS Gateway server. What should you do？（）

• A、Add the security group to the Remote Desktop Users group.
• B、Add the security group to the TS Web Access Computers group.
• C、Create and configure a Resource Authorization Policy.
• D、Create and configure a Connection Authorization Policy.