CompTIA A+ Core 2 Question D-85

A user reports that the desktop PC shuts down 10 minutes after turning it on in the morning. When the technician moves the PC, it sounds like there are loose parts sliding around in the case. Which of the following is the MOST likely explanation for the PC shutting down?

A. The CMOS battery is bad.
B. A memory module has become unseated.
C. The heat sink retaining clip has broken loose.
D. The hard drive cable has become unseated.