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Math·Geometry and Trigonometry·Area and volume

hard

In the figure, $\overline{LQ}$ intersects $\overline{MP}$ at point $R$, and $\overline{LM}$ is parallel to $\overline{PQ}$. The lengths of $\overline{MR}$ and $\overline{RP}$ are $8$ and $14$ units, respectively. The area of $△LMR$ is $36$ square units. What is the area of $△PQR$, in square units?

A

$\frac{576}{49}$

B

$\frac{144}{7}$

C

$63$

D

$\frac{441}{4}$