In What Fundamental Respect Does Electromagnetism Break Away from the Form

In what fundamental respect does electromagnetism break away from the form of materialism associated with the physics of Newton and Democritus?

A) The electromagnetic field is physically real, even though it is not made of atoms.
B) Electromagnetism implies that the future cannot be precisely determined.
C) Newton had thought that the only force in the universe was gravity.
D) The electromagnetic force can be felt across a vacuum.
E) Nonsense-- electromagnetism agrees quite well with Newtonian materialism.