Below are a set of variables that could be changed in order to affect the gravitational force between two objects.

- moving the objects closer together

- moving the objects further apart

- increasing the mass of one or both objects

- decreasing the mass of one or both objects

Which TWO of the following variables will increase the gravitational force between the objects? Choose only two answers.

A:moving the objects closer together
B:moving the objects further apart
C:increasing the mass of one or both objects
D:decreasing the mass of one or both objects