Factor the Expression Completely $3 ( a - b ) ^ { 2 } + 5 ( a - b ) + 2$

Multiple Choice

Factor the expression completely. If the expression is prime, so indicate. $3 ( a - b ) ^ { 2 } + 5 ( a - b ) + 2$

A) $( 3 a - b + 3 ) ( a - b + 1 )$
B) $( 3 a - 3 b - 2 ) ( a - b - 1 )$
C) $( 3 a - 3 b + 2 ) ( a - b + 1 )$
D) $( 3 a - b - 3 ) ( a - b - 1 )$
E) prime