Two protons are separated by a distance of 5fm. Which one of the following correctly describes the relative magnitudes of the nuclear and electrostatic forces acting between them at this separation?
(a) Nuclear force attractive and much stronger than electrostatic repulsion
(b) Nuclear force negligible; electrostatic repulsion dominates
(c) Nuclear force attractive but slightly weaker than electrostatic repulsion
(d) Nuclear force repulsive and stronger than electrostatic repulsion