问题：

[单选] Your company hires 10 new employees. You want the new employees to connect to the main office through a VPN connection. You create new user accounts and grant the new employees the Allow Read and Allow Execute permissions to shared resources in the main office. The new employees are unable to access shared resources in the main office. You need to ensure that users are able to establish a VPN connection to the main office What should you do（）

A . Grant the new employees the Allow Full control permission.
B . Grant the new employees the Allow Access Dial-in permission.
C . Add the new employees to the Remote Desktop Users security group.
D . Add the new employees to the Windows Authorization Access security group.