In the diagram above, \(\angle J = \angle M, \angle K = \angle N,\) and side lengths are as shown. Given this, \(y\)

[Gmat_mission]

In the diagram above, \(\angle J = \angle M, \angle K = \angle N,\) and side lengths are as shown. Given this, \(y\) must equal

(A) \(\dfrac{r}{sx}\)
(B) \(\dfrac{x}{sr}\)
(C) \(\dfrac{sr}{x}\)
(D) \(\dfrac{sx}{r}\)
(E) \(\dfrac{rx}{s}\)


[spoiler]OA=D[/spoiler]

Source: Magoosh