Two laptop computers each have a mass of 2 kg. If they are 0.5 m apart on a desk, what is the gravitational force between them? G=6.67 × 10⁻¹¹ N·(m/kg)²

a. 2.14 × 10⁻¹⁰
b. 1.07 × 10⁻¹⁰
c. 1.07 × 10⁻⁹
d. 2.14 × 10⁻⁹