You manage a server named Server2 that runs Windows Server 2008. You install and test the Terminal Services role on Server2. You publish an application by using Terminal Services. All users must connect to the Terminal Services application by using the Remote Desktop Protocol. You install and configure the Terminal Services Gateway （TS Gateway） role service on Server2. You configure a default domain policy to enable the Enable Connection through TS Gateway setting. Users report that they cannot connect to the Terminal Services application. You need to ensure that users can access the Terminal Services application on the intranet and from the Internet. What should you do？（）

A. Configure the Enable Connection through TS Gateway Group Policy setting to Disabled.
B. Configure the Set TS Gateway server address Group Policy and configure the IP address of the TSGateway server. Link the GPO to the domain.
Configure Server Authentication on the Remote Desktop Connection client to Always connect， even if server authentication fails for all users.
D. Enable the Set TS Gateway server authentication method Group Policy to the Ask for credential， use NTLM protocol setting. Link the GPO to the domain.