How Can We Mathematically Express Newton's Law of Gravity? (In

Multiple Choice

How can we mathematically express Newton's law of gravity? (In the following, F is the force of Gravity, G is a constant; m and M are the masses or two bodies (such as Earth and the Sun) ; and r is the distance between the centers of mass of the two bodies.)

A) F = GMm/r
B) F = GMm/r²
C) F = GMm/r³
D) F = Gm²M/r²