问题：

[单选]

You have a server that runs the Terminal Services Gateway （TS Gateway） role service. Users need to connect remotely through the gateway to desktop computers located in their offices. 
You create a security group named Remote1 for the users who need to connect to computers in their offices. 
You need to enable the users to connect to the TS Gateway.
What should you do？（）

A . Add the Remote1 security group to the local remote desktop users group on the TS Gateway server.
B . Create a client authorization policy. Add the Remote1 security group and enable Device redirection.
C . Create a resource authorization policy. Add the Remote1 security group and enable Users to connect to any resource.
D . Create a Group Policy object and enable the Set TS Gateway authentication method properties to Ask for credentials， use Basic protocol. Apply the policy to the TS Gateway server.