Use the Power Rule and the Power of a Product $\left( - 9 x ^ { 3 } \right) ^ { 2 }$

Multiple Choice

Use the power rule and the power of a product or quotient rule to simplify the expression.
- $\left( - 9 x ^ { 3 } \right) ^ { 2 }$

A) $81 x ^ { 5 }$
B) $81 x ^ { 6 }$
C) $- 9 x ^ { 6 }$
D) $- 81 x ^ { 6 }$