System, device, component, facility - part 1

A system is a group of things which work together, for example, a computer.

Type the correct number which matches the phrase to complete the following sentences:

A) A system is ____, for example, a computer. A -- 1. a small part of a machine
B) A device is _____, for example, a printer. B -- 2. something which makes work easier on a computer
C) A component is ____, for example, a microchip. C -- 3. a group of things which work together
D) A facility is ____, for example, a spell-checker function. D -- 4. a machine which has a special function