You are the administrator of Company’s network.You install 50 new Windows 2000 Professional computers in the marketing department. Two weeks later,users report that five of the computers have stopped responding. You troubleshoot the five computers.You find that some users have installed unsigned device drivers that are not supported by Windows 2000Professional.You want to determine which drivers were installed by users.What should you do?（）

• A、Run the chkdsk /f command on all drives on the computers.
• B、Configure Windows 2000 Professional to enable driver signing verification.
• C、Run the File Signature Verification tool on the computers.
• D、Run the System File Checker utility on the computers.