Physics · Electrostatic Potential

Consider the following properties of equipotential surfaces: (A) Equipotential surfaces are concentric spheres for a point charge. (B) Two equipotential surfaces can intersect. (C) Electric field is perpendicular to the equipotential surface. (D) Work done to move a charge on an equipotential surface is zero. How many of the above statements are correct?

1. Only one
2. Only two
3. Only three
4. All four