You have a server that runs Windows Server 2003 Service Pack 2 (SP2). You need to identify all the unsigned drivers that are installed on the server. What should you do? （）

• A、Run Chkdsk.exe.
• B、Run Sigverif.exe.
• C、Review %systemroot%/repair/setup.log.
• D、Open Device Manager and review all the devices that contain a warning.