A spherical planet far out in space has a mass M0 and diameter D0. A particle of mass m falling freely near the surface of this planet will experience an acceleration due to gravity which is equal to
$\dfrac{GM_{0}}{D_{0}^{2}}$
$\dfrac{4mGM_{0}}{D_{0}^{2}}$
$\dfrac{4GM_{0}}{D_{0}^{2}}$
$\dfrac{GmM_{0}}{D_{0}^{2}}$