On an NIS client, the following is a portion of the output of cat /etc/passwd:
+Joe:::::::
+Sam:::::::
+:*::::::::/bin/false
Which of the following is true for all users other than Joe and Sam?
A.
They are denied access.
B.
They gain access after being prompted for a shell.
C.
They are granted limited access.
D.
They have full access.