Cer-tech .com has an active directory domain. You are the administrator of ES1，a server that runs Windows Server 2008 and has Terminal Services role and the Terminal Services Web Access role serviceinstalled on it. You install Terminal Services Gateway role on ES1 and create the Terminal Services connection authorization policy. Users are reporting that they cannot access ES1. What should you do toensure that the users can connect to ES1？（）

• A、Install and configure the Terminal Services Resource Authorization Policy （RAP） on ES1
• B、Configure the Network Access Protection on ES1 and start the Terminal services gateway service
• C、Create a Terminal Services Group Policy Object and allow users to connect remotely to the Terminalservices setting on the GPO. Link the GPO to the domain controller
• D、Create a Terminal services GPO and Set the TS Roaming profiles setting on the GPO