Solve the Equation for the Specified Variable $$F = \frac { - G M m } { r ^ { 2 } } \text { for } G$$

Multiple Choice

Solve the equation for the specified variable.
- $$F = \frac { - G M m } { r ^ { 2 } } \text { for } G$$

A) $G = \frac { - F M m } { r ^ { 2 } }$
B) $G = \frac { - \mathrm { Fr } ^ { 2 } } { \mathrm { Mm } }$
C) $G = \frac { F ^ { 2 } } { M m }$
D) $G = - \mathrm { Fr } ^ { 2 } - \mathrm { Mm }$