A body of mass M kg is located 0.5m from a body of mass 2 M kg. At the same time it is 0.75m from a third body of mass 3 M kg and 0.9m from a fourth body of mass 5M kg. Which of the three bodies exerts the least gravitational force of attraction on the body of mass M kg?

• A.2M kg
• B.3M kg
• C.5 M kg
• D.All forces equal