You connect an external monitor to a portable computer. You need to increase the available desktop area to include the external monitor. What should you do?

A.
From the Display properties, extend the display.

B.
From the Display properties, modify the resolution settings.

C.
Restart the computer in VGA Mode. Run dxdiag.exe.

D.
Restart the computer in VGA Mode. Install the most up-to-date driver for the video graphics adapter.