Consider point charges of +Q and +4Q, which are separated by 3.0m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acts on it with zero net force?

A) At the midpoint between the two charges
B) Closer to the +Q charge
C) Closer to the +4Q charge
D) It is not possible to place a charge of -Q in such a way that the electrostatic force acts on it with zero net force.