Factor Completely Using the Trial and Error Method to Factor $9 x ^ { 2 } + 18 x + 8$

Multiple Choice

Factor completely using the trial and error method to factor trinomials. If unfactorable, indicate that the polynomial is
prime.
- $9 x ^ { 2 } + 18 x + 8$

A) $( 9 x + 2 ) ( x + 4 )$
B) prime
C) $( 3 x + 2 ) ( 3 x + 4 )$
D) $( 3 x - 2 ) ( 3 x - 4 )$