Given that the gravitational constant is G. Newton's universal law of gravitation states that the force of attraction between two masses M₁ and M₂ separation by a distance r is

• A.\(Gr^2 M_1M_2\)
• B.\(Gr M_1M_2\)
• C.\(\frac{GM_1 M_2}{r^2}\)
• D.\(\frac{GM_1 M_2}{r}\)