Write the Expression in Exponential Form $\sqrt [ 9 ] { 4 x ^ { 12 } y ^ { 11 } }$

Multiple Choice

Write the expression in exponential form. Assume that all variables represent positive real numbers.
- $\sqrt [ 9 ] { 4 x ^ { 12 } y ^ { 11 } }$

A) $\left( 4 x ^ { 12 } y ^ { 11 } \right) ^ { 1 / 5 }$
B) $\left( 4 x ^ { 12 } y ^ { 11 } \right) ^ { 5 }$
C) $\left( \frac { 4 } { 5 } x ^ { 12 } y ^ { 11 } \right) ^ { 5 }$
D) $\left( \frac { 4 } { 5 } x ^ { 12 } y ^ { 11 } \right) ^ { 1 / 5 }$