Which of the following statements about sources of magnetism is incorrect?
A. Breaking a bar magnet will produce two magnets; each with its own north and south pole.
B. Passing current through a wire generates a magnetic field that wraps around the wire.
C. Magnetism is a property of the movement of electric charges.
D. It is believed that the Earth's mantle is made of liquid iron and nickel which flows and generates electric currents that generate the planet's magnetic field.
E. Ferromagnetic domains are regions where electrons move in a uniform manner and produce a magnetic field.