Factor Completely $$9 x ^ { 3 } + 12 x ^ { 2 } + 4 x$$

Multiple Choice

Factor completely. If the polynomial cannot be factored, write ʺprime.ʺ
- $$9 x ^ { 3 } + 12 x ^ { 2 } + 4 x$$

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