Simplify the Expression $\sqrt [ 3 ] { \frac { 8 } { 9 x ^ { 2 } } }$

Multiple Choice

Simplify the expression. Assume all variables represent positive real numbers.
- $\sqrt [ 3 ] { \frac { 8 } { 9 x ^ { 2 } } }$

A) $\frac { \sqrt [ 3 ] { 648 x ^ { 2 } } } { 9 x }$
B) $\frac { \sqrt [ 3 ] { 648 x } } { 81 }$
C) $\frac { \sqrt [ 3 ] { 72 x } } { 9 x }$
D) $\frac { \sqrt [ 3 ] { 24 x } } { 3 x }$