JAVA/Sun Exam Questions

Which file will Wally need to configure to allow Frank to login to system1 without entering a passwo

Wally is configuring a host named system1. He is attempting to allow user Frank to login from the host system2 without the need to enter a password. Which file will Wally need to configure to allow Frank to login to system1 without entering a password?

A.
/etc/.rhost

B.
~frank/.rhosts

C.
/.rhosts

D.
~wally/.rhosts