Factor Completely Using the Trial and Error Method to Factor $9 x ^ { 2 } - 12 x t + 4 t ^ { 2 }$

Multiple Choice

Factor completely using the trial and error method to factor trinomials. If unfactorable, indicate that the polynomial is
prime.
- $9 x ^ { 2 } - 12 x t + 4 t ^ { 2 }$

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