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Math·Geometry and Trigonometry·Lines, angles, and triangles

easy

Triangle	Perimeter
$TUV$	48
$XYZ$	336

The table gives the perimeters of similar triangles $TUV$ and $XYZ$, where $T$ corresponds to $X$, $U$ corresponds to $Y$, and $V$ corresponds to $Z$. The length of $\overline{TU}$ is 21. What is the length of $\overline{XY}$?

A

3

B

21

C

69

D

147