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Math·Geometry and Trigonometry·Right triangles and trigonometry

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In right triangle $RST$, angle $S$ is a right angle. The length of side $\overline{RS}$ is $2\sqrt{130}$, the length of side $\overline{ST}$ is $129$, and the length of side $\overline{TR}$ is $131$. What is the value of $\tan R$ in the triangle shown?

A

$\frac{129}{2\sqrt{130}}$

B

$\frac{2\sqrt{130}}{129}$

C

$\frac{131}{2\sqrt{130}}$

D

$\frac{2\sqrt{130}}{131}$