Use the Properties of Exponents to Simplify the Expression $$\left( x ^ { 1 / 3 } y ^ { 3 / 5 } \right) \left( x ^ { - 1 / 3 } y ^ { 3 / 2 } \right)$$

Multiple Choice

Use the properties of exponents to simplify the expression. Write with positive exponents.
- $$\left( x ^ { 1 / 3 } y ^ { 3 / 5 } \right) \left( x ^ { - 1 / 3 } y ^ { 3 / 2 } \right)$$

A) $\frac { y ^ { 9 / 10 } } { x ^ { 1 / 9 } }$
B) $\frac { y ^ { 9 / 10 } } { x ^ { 2 / 3 } }$
C) $x y ^ { 21 / 10 }$
D) $y ^ { 21 / 10 }$