A security administrator would like to ensure that system administrators are not using the same
password for both their privileged and non-privileged accounts. Which of the following security
controls BEST accomplishes this goal?

A.
Require different account passwords through a policy

B.
Require shorter password expiration for non-privileged accounts

C.
Require shorter password expiration for privileged accounts

D.
Require a greater password length for privileged accounts