You need to improve the company’s security patch management process. Your solution must meet existing business requirements and it cannot increase the number of employees or unnecessarily increase ongoing administrative effort. What should you do？（）

A. Provide all users with the ability to access and use the Windows Update Web site
B. Upgrade all client computers to either Windows 2000 Professional or Windows XP Professional. Implement Software Update Services （SUS）
C. Upgrade all client computers to either Windows 2000 Professional or Windows XP Professional.Make all users members of the Power Users group on their client computers
D. Install the Active Directory Client Extensions on all Windows 95， Windows 98， and Windows NT Workstation 4.0 computers. Manually download all security patches to a Distributed File System （DFS） replica. Instruct all users to use the DFS replica to install security patches
E. Install the Active Directory Client Extensions on all Windows 95， Windows 98， and Windows NT Workstation 4.0 computers. Install a Software Update Services （SUS） server and make all users local administrators on their client computer