You work as a Network Administrator for Perfect World Inc. The company has a Linux-based
network. You have configured a Linux server to connect to the Internet. Before connecting it to the
Internet, you want to check all the files on which SUID has been set. Which of the following
commands will you choose to list all such programs?

A.
find /-perm -2000

B.
ls -l

C.
find /-perm -4000

D.
ls -suid