Which of the following proves that electric fields can convert potential energy into kinetic energy? a) Two electric charges produce fields. When those fields interact, the charges either attract or repel from each other

b) An electric charge is held stationary in an electric field

c)Two charges are affected by gravity, causing them to attract towards each other

d)Multiple charges are arranged in such a way to ensure that there are no net forces acting upon each other

i think its a or c?