Rationalize the Denominator and Simplify $\sqrt [ 3 ] { \frac { 4 } { 9 x ^ { 2 } } }$

Multiple Choice

Rationalize the denominator and simplify. Assume all variables represent nonnegative real numbers.
- $\sqrt [ 3 ] { \frac { 4 } { 9 x ^ { 2 } } }$

A) $\frac { \sqrt [ 3 ] { 324 x } } { 81 }$
B) $\frac { \sqrt [ 3 ] { 36 x } } { 9 x }$
C) $\frac { \sqrt [ 3 ] { 324 x ^ { 2 } } } { 9 x }$
D) $\frac { \sqrt [ 3 ] { 12 x } } { 3 x }$