The following entry is in the /etc/host.equiv and /home/jsmith/.rhosts file on server Alpha：+ jsmith.What does this entry indicate？（）

• A、The user "jsmith" can use r-commands from any server to server Alpha system-wide
• B、The user "jsmith" can use r-commands from server Alpha to any server system-wide
• C、The user "jsmith" can use r-commands from server Alpha to any server with a /home/jsmith directory
• D、The user "jsmith" can use r-commands from any server to server Alpha only in the /home/jsmith directory