Rationalize the Denominator and Simplify $\sqrt{\frac{7}{27 \mathrm{xy}^{2}}}$ A) $\frac{\sqrt{21 x}}{9 x y}$

Multiple Choice

Rationalize the denominator and simplify. A ssume all variables represent nonnegative real numbers.
- $\sqrt{\frac{7}{27 \mathrm{xy}^{2}}}$

A) $\frac{\sqrt{21 x}}{9 x y}$

B) $\frac{\sqrt{21}}{9 y \sqrt{x}}$

C) $\frac{7 \sqrt{3 x}}{9 x y}$

D) $\frac{\sqrt{21 x y}}{9 x y}$