CompTIA A+ 220-902 Question D-92

A customer calls an IT consultant to explain an issue they are having with their Windows 7 Professional PC. Windows Update attempts to install patches upon each startup but fails on the same single update. The customer has attempted to re-run Windows Update from Control Panel but the issue remains. Which of the following courses of action would BEST resolve the problem?

A. Running a full DEFRAG on the system
B. Clearing the AppData temp folder entirely
C. Clearing the Windows Update download cache entirely
D. Uninstalling the Windows Update feature in Windows 7 and reinstalling it directly from the Microsoft website