Use Substitution to Factor the Polynomial Completely $3 ( a - 4 ) ^ { 2 } + 14 ( a - 4 ) + 15$

Multiple Choice

Use substitution to factor the polynomial completely.
- $3 ( a - 4 ) ^ { 2 } + 14 ( a - 4 ) + 15$

A) $( 3 a + 7 ) ( a - 1 )$
B) $( 3 a - 7 ) ( a - 1 )$
C) $( 3 a + 7 ) ( a + 1 )$
D) $( 3 a - 7 ) ( a + 1 )$