A user on your network downloads a video card driver from the Internet. You are unsure of the source of the driver. You want to ensure that the user does not lose production time because of an incompatible driver. What should you do?（）

• A、Install the driver into the computer. Restart the computer. Use the last known good configuration to recover the original driver if necessary. 
• B、Install the driver in the computer. Use the hardware troubleshooter and then use the recovery console to recover the original driver if necessary. 
• C、Display the advanced attributes of the video card driver file. Install the file only if the contents have been secured. 
• D、Run file signature verification utility to verify that the driver has been digitally signed.