What should you do immediately if the root password is compromised?

A.
Change the root password.

B.
Change all passwords.

C.
Increase the value of password age.

D.
Decrease the value of password history.

Explanation:
All passwords must be changed if the root password is compromised or disclosure is
suspected. (This is a separate case; the optimal solution would be to reload the
compromised computer. A computer that has been downgraded can never be upgraded to higher
security level)