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What is the amount of work done by gravity when an object of mass $m$ moves from the surface of a planet (with a radius of $R$) to a point $4R$ from the center of the planet?

A

$\cfrac { { -G{ M }_{ planet }m } }{ 16{R}^{2} } $

B

$\cfrac { { -G{ M }_{ planet }m } }{ 4{R}^{2} } $

C

$\cfrac { { -G{ M }_{ planet }m } }{ 4R } $

D

$\cfrac { { -3G{ M }_{ planet }m } }{ 4R } $

E

$\cfrac { { -G{ M }_{ planet }m } }{R } $

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