After changing to the /nas/sbin directory as root, name the command which should be issued to edit t

You must dial eight [8] to access an outside line, for Call Home to work at Certkiller .com site. After changing to the /nas/sbin directory as root, name the command which should be issued to edit the dialing prefix number.

A.
./ch_dd

B.
./ch_cfg

C.
./ch_dialin_disable

D.
./ch_stop