What should an administrator do to allow the logon of a user to a local system without limitations from the host ‘webserver’?（）

A、configure the /etc/.rhosts with. webserver <user>

B、configure the root'$HOME/.rhost file with.+webserver <user>

C、configure each user's $HOME/.rhosts file with. webserver <user>

D、configure the root'$HOME/.rhost file with.<webserver ip> <user&gt