Simplify Write the Answer Using Positive Exponents Only $\left( x ^ { 9 } y \right) ^ { 3 }$

Multiple Choice

Simplify. Write the answer using positive exponents only.
- $\left( x ^ { 9 } y \right) ^ { 3 }$

A) $x ^ { 12 } y$
B) $x ^ { 27 } y$
C) $x ^ { 27 } y ^ { 3 }$
D) $x ^ { 12 } y ^ { 4 }$