Match the internal component with the correct description

Power Supply

A$.$ used to customize a computer so it can perform a desired function

CPU$/$Heatsink

B$.$ pulls heat away from the CPU

Motherboard

C$.$ contains all of the wiring and circuitry that is necessary for different components to

Expansion card communicate with each other

D$.$ converts $AC$ power from the wall to $DC$ power that can be used by the computer