The drawing shows a student holding two negatively charged balloons.

What is most likely to occur if the student brings the balloons closer to each other?

a- The magnitude of the electrostatic force between the balloons will decrease, and they will repel each other.
b- The magnitude of the electrostatic force between the balloons will decrease, and they will attract each other.
c- The magnitude of the electrostatic force between the balloons will increase, and they will attract each other.
d- The magnitude of the electrostatic force between the balloons will increase, and they will repel each other.

d- The magnitude of the electrostatic force between the balloons will increase, and they will repel each other.