The Force That Is Exerted by a Magnet as It

The force that is exerted by a magnet as it picks up iron nails could be best described as

A) the force of attraction between the nuclei of atoms in the magnet and the nuclei of atoms in the nails.
B) the electric force exerted by electrons in the magnet, on electrons in the nails.
C) the magnetic force exerted by ions moving within the magnet on electrons moving within the nails.
D) the magnetic force exerted by electrons moving within the magnet, on electrons moving within the nails.
E) the electric force exerted by ions in the magnet on electrons in the nails.