An object at rest with mass $m$ is under influence of the gravitational force from two celestial objects with masses M$1$ and M$2.$ Total Potential energy at $m$ is

A$)\frac{1}{2}m{v}^2-\frac{G{M}_1{M}_2}{r}$

B$)\frac{1}{2}{M}_1{v}^2-\frac{Gm{M}_2}{r}+\frac{1}{2}{M}_2{v}^2-\frac{Gm{M}_2}{r}$

$\frac{1}{2}{M}_1{v}^2+\frac{Gm{M}_2}{r}+\frac{1}{2}{M}_2{v}^2+\frac{Gm{M}_2}{r}$

$-\frac{Gm{M}_1}{r}+-\frac{Gm{M}_2}{r}$

$($A$)$

$($B$)$

$($C$)$

$($D$)$