Use the Power Rule and the Power of a Product $\left( \frac { x y } { 3 } \right) ^ { 2 }$

Multiple Choice

Use the power rule and the power of a product or quotient rule to simplify the expression.
- $\left( \frac { x y } { 3 } \right) ^ { 2 }$

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