\[{{\left( \frac{{{\mathbf{x}}^{\mathbf{-3}}}}{{{\mathbf{y}}^{\mathbf{3}}}} \right)}^{\mathbf{2/3}}}\mathbf{\times }{{\left( \frac{{{\mathbf{x}}^{\mathbf{3}}}}{{{\mathbf{y}}^{\mathbf{-3}}}} \right)}^{\mathbf{2/3}}}\]is equal to

• A. \[\frac{{{x}^{4}}}{{{y}^{-4}}}\]
• B.  \[\frac{{{y}^{4}}}{{{x}^{-4}}}\]
• C.  \[\frac{{{x}^{-}}^{4}}{{{y}^{4}}}\]
• D.  \[\frac{1}{{{x}^{2}}{{y}^{2}}}\]
• E. None of these