A security administrator is responsible for performing periodic reviews of user permission settings due to high turnover and internal transfers at a corporation. Which of the following BEST describes the procedure and security rationale for performing such reviews?
A. Review all user permissions and group memberships to ensure only the minimum set of permissions required to perform a job is assigned.
B. Review the permissions of all transferred users to ensure new permissions are granted so the employee can work effectively.
C. Ensure all users have adequate permissions and appropriate group memberships, so the volume of help desk calls is reduced.
D. Ensure former employee accounts have no permissions so that they cannot access any network file stores and resources.