You are a desktop support technician for your company. All client computers run Windows XP Professional with Service Pack 2 (SP2).
A user reports that he recently installed new applications on his computer. The applications do not work correctly. The applications did work correctly on another computer. In addition, after the user installed the applications, his computer began to run slower. He uninstalled and reinstalled the applications and restarted the computer many times. However, the applications still do not work, and the computer still runs slow.

The user needs his computer to work as it did before he installed the applications.

What should you instruct the user to do?

A.
Start the computer by using the Last Known Good Configuration option from the Windows Advanced Options menu.

B.
Set Date and Time in Control Panel to a date and time before the applications were installed.

C.
Roll back the drivers on the computer.

D.
Use System Restore.