Use Substitution to Factor the Polynomial Completely $$9 x ^ { 6 } + 6 x ^ { 3 } - 8$$

Multiple Choice

Use substitution to factor the polynomial completely.
- $$9 x ^ { 6 } + 6 x ^ { 3 } - 8$$

A) $\left( 3 x ^ { 3 } + 2 \right) \left( 3 x ^ { 3 } - 4 \right)$
B) $\left( 3 x ^ { 3 } + 1 \right) \left( 3 x ^ { 3 } - 8 \right)$
C) $9 \left( x ^ { 3 } - 2 \right) \left( x ^ { 3 } + 4 \right)$
D) $\left( 3 x ^ { 3 } + 4 \right) \left( 3 x ^ { 3 } - 2 \right)$