A non-root user can run rsh commands from serverA to serverB， but attempts to run rsh  commands by the root user return with a permission error message. What action will resolve the problem？（）

• A、Add root user to the /etc/hosts.equiv on serverB .
• B、Create $HOME/.rhosts file for the root user on serverB .
• C、Restart the rshd daemon with root enabled option on serverB .
• D、Add entry to allow root user from serverA to the /etc/hosts.allow on serverB .