Use the Rules of Exponents to Simplify the Expression $\left(\frac{x^{4}}{y^{-8}}\right)^{1 / 4}$

Multiple Choice

Use the rules of exponents to simplify the expression. Write the answer with positive exponents. Assume that all variables represent positive real numbers.
- $\left(\frac{x^{4}}{y^{-8}}\right) ^{1 / 4}$

A) $x y$

B) $x y^{1 / 2}$

C) $\frac{x}{y^{2}}$

D) $x y^{2}$