A user running Windows 7 has reported that a computer has crashed and a BSOD displayed. The computer was restarted and now the user reports that it is running slower than usual, especially when multiple programs are open at the same time. The technician knows the system has 8GB of memory (2x 4G DIMMS), and suspects that the system has a faulty memory module and has disabled one of the DIMMs. Which of the following would a technician do to confirm that the OS is now only detecting 4GB of memory?
A. In the Control Panel, click Devices and Printers.
B. In the Control Panel, click System.
C. In the Control Panel, click Device Manager.
D. In the Control Panel, click Performance Information and Tools.