An HP Compaq dc5850 Microtower PC has a total of 4GB RAM installed, but the operating system
only sees 3GB. What is the probable cause?

A.
The operating system only supports applications that require a maximum of 3BG of memory.
B.
A 32-bit Windows system is limited to addressing 4GB of memory, and some of the space is used
by I/O devices.
C.
The memory modules are not the correct type or speed to support 4GB or they are not seated
properly.
D.
The memory is not configured properly in Windows Device Manager.