The user smith on your system complained that he is not able to change his password. As an
administrator, you long-listed the passwd command and the /etc/shadow file on the system.
View the Exhibit that shows the output. 
What would you do to enable smith to change his password?
A.
Set SGID on /usr/bin/passwd.
B.
Set SUID on /usr/bin/passwd.
C.
Set sticky bit on /usr/bin/passwd.
D.
Set write and execute permissions for others on /etc/shadow.
E.
Set read, write, and execute permissions for others on /etc/shadow.
Explanation: