Which of the following commands disables the automatic password expiry for the user usera?

A.
chage –maxdays none usera

B.
chage –maxdays 99 usera

C.
chage –maxdays -1 usera

D.
chage –lastday none usera

E.
chage –lastday 0 usera

Explanation:
http://www.tutorialspoint.com/unix_commands/chage.htm