After a 512MB RAM upgrade is installed in a laptop only 448MB of RAM is being reported. Which
of the following BEST explains the reason for the difference in RAM?

A.
The operating system does not support more than 448MB of RAM.

B.
The RAM is not seated properly.

C.
The technician installed a faulty RAM module.

D.
The laptop is designed with a video card that uses shared RAM technology.