You are a desktop support technician for your company. The computers in your company run Windows Vista with default settings. The performance of one the computers has degraded. You verify that the computer is not infected with spyware or adware and does not run unknown programs. You need to troubleshoot the issue by checking the programs that run on the computer. What should you do first?

A.
In Microsoft Windows Defender, open the History window and click Clear History.

B.
In Microsoft Windows Defender, open the History window and click Allowed Items.

C.
Select and enable the Enable Logging Unknown Detection option in group policy.

D.
Select and enable the Enable Logging Known Good Detections option in group policy.