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