Perform the Indicated Operations $\left( \frac { x ^ { 2 } } { y ^ { - 4 } } \right) ^ { 1 / 2 }$

Multiple Choice

Perform the indicated operations. Write the answer using only positive exponents. Assume all variables represent
positive real numbers.
- $\left( \frac { x ^ { 2 } } { y ^ { - 4 } } \right) ^ { 1 / 2 }$

A) $x y ^ { 1 / 2 }$
B) $x y$
C) $x y ^ { 2 }$
D) $\frac { x } { y ^ { 2 } }$