Two isolated spherical planets have the same gravitational potential at their surfaces. Which ratio must also be the same for the two planets?

A. \(\frac{{{\rm{radiu}}{{\rm{s}}^{\rm{3}}}}}{{{\rm{mass}}}}\)

B. \(\frac{{{\rm{radiu}}{{\rm{s}}^{\rm{2}}}}}{{{\rm{mass}}}}\)

C. \(\frac{{{\rm{radius}}}}{{{\rm{mass}}}}\)

D. radius

C