JAVA/Sun Exam Questions

Which command is used at the beginning of each terminal session to identify oneself to the system?

Which command is used at the beginning of each terminal session to identify oneself to the system? This command is invoked by the system when a connection is first established, after the previous user has terminated the login shell by issuing the exit command.

A.
login

B.
init

C.
pam

D.
start

E.
startX