The upgrade needs something else

One of your associates has brought you an old computer for you to install a clean version of Windows XP. The computer has a 200 MHz processor, 64 MB of RAM, a 20 GB hard drive, and a video card that only supports 800×600 resolution. Which of these hardware specifications do not meet the minimum requirements of Windows XP Professional?

A) Processor

B) Memory

C) Hard drive space

D) Video resolution

E) This build is never going to handle end-game raiding. The guild will not be happy.