A system administrator wants to configure a setting that will make offline password cracking more challenging. Currently the password policy allows upper and lower case characters a minimum length of 5 and a lockout after 10 invalid attempts. Which of the following has the GREATEST impact on the time it takes to crack the passwords?
A. Increase the minimum password length to 8 while keeping the same character set
B. Implement an additional password history and reuse policy
C. Allow numbers and special characters in the password while keeping the minimum length at 5
D. Implement an account lockout policy after three unsuccessful logon attempts