A flat-bed plotter uses a pen which moves in two directions across a piece of paper fixed on a flat-bed. Can you tell who controls the movements of this pen?

The correct answer is E. None of the above.

A flat-bed plotter uses a pen which moves in two directions across a piece of paper fixed on a flat-bed. The movements of the pen are controlled by a computer. Microfilm, microfiche, film card, and COM are all types of microform, which is a type of storage medium that uses photographic film to store images. Microform is not used to control the movements of a pen in a flat-bed plotter.