Factor the Expression Completely $- 21 x + 9 + 12 x ^ { 2 }$

Multiple Choice

Factor the expression completely. $- 21 x + 9 + 12 x ^ { 2 }$

A) $( 7 x - 3 ) ( x - 1 )$
B) $3 ( 4 x - 3 ) ( x - 1 )$
C) $3 ( 7 x - 3 ) ( x - 1 )$
D) $( 4 x - 3 ) ( 3 x - 1 )$
E) prime