Which statement best explains the relationship between the electric force between two charged objects and the distance between them
a) as the distance increases by a factor, the electric force increases by the square of that factor.
b) as the distance increases by a factor, the electric force increases by twice that factor.
c) as the distance increases by a factor, the electric force decreases by twice that factor.
d) as the distance increases by a factor, the electric force decreases by the same factor.
e) as the distance increases by a factor, the electric force decreases by the square of that factor.