单项选择题

A.Configure each server running Routing and Remote Access as a RADIUS Client.  
B.Add a Remote Access policy to each server running Routing and Remote Access. Configure the Access method as VPN access.  
C.Add a Remote Access policy to each server running Routing and Remote Access. Configure the Access method as dialup access.  
D.Add a Remote Access policy to each server running Routing and Remote Access. Configure the Access method as wireless access.