A system administrator wants to couple two servers together so that users from server A can access server B without entering their password. How would this be accomplished？（）

• A、employ NIS to synchronize user names and passwords
• B、create a /.rhosts on server A and serve B
• C、create a $HOME/.netrc for all users on server A and serve rB
• D、create a /etc/hosts.equiv on server A and server B