When enabling a tty port to be used for a cu session， what must be done on the system？（）

A.smit tty； take the defaults and create the desired tty
B.lsdev -Cc tty； check to see if the desired tty exists， if not create using smit tty Add a line similar to； Direct tty0 - 9600 direct to /etc/uucp/Devices Verify /etc/uucp/Dialers has the following line； direct
C.Install bos.net.uucp and the first available tty will be configured for use by a cu session
D.Run the Asynchronous Terminal Emulation （ate） program and it will configure a tty port for a cu session