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