If $ \sqrt[3] {\large\frac{x}{y}}=\frac{2}{3}$ then $\large\frac{x}{y}$$=?$

Question

$\begin{array}{1 1} \large\frac{2}{3} \\ \large\frac{8}{27} \\ \large\frac{4}{9} \\ \large\frac{27}{8} \end{array} $