Two solidmetal spheres of same material and radius .r. are in contact with each other. The gravitational force of attraction between the spheres is proportional to

Two solidmetal spheres of same material and radius .r. are in contact

1.	Two solidmetal spheres of same material and radius .r. are in contact with each other. The gravitational force of attraction between the spheres is proportional to
Answer» `R^(4)` `r^(2)` `r^(3)` `r^(3)` ANSWER :A