All servers on your network run Windows Server 2008 R2. You deploy Remote Desktop Services  （RDS）.You are configuring the Remote Desktop Session Host （RD Session Host） role service. You need to ensure that authentication occurs before the Remote Desktop Connection logon screen appears. What should you do？（）

• A、In the RD Session Host Configuration tool， select the Allow connections only from computers running Remote Desktop with Network Level Authentication option.
• B、In the RD Session Host Configuration tool， select the Allow connections from computers running any version of Remote Desktop option.
• C、In the Group Policy Object Editor， configure the Set TS Gateway authentication method setting to Use smart card.
• D、In the Group Policy Object Editor， configure the Set TS Gateway authentication method setting to Use locally logged-on credentials.