CEMC Fermat, 1998

Geometry Difficulty 1.0 Junior Find the answer Canada

In the diagram, the value of $y$ is

(A) $\dfrac{13}{2\sqrt{3}}$ (B) $\dfrac{5}{\sqrt{3}}$ (C) $2$ (D) $12$ (E) $\dfrac{\sqrt{3}}{5}$

Figure for this problem

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