Factor Completely: ( a + B )² - 8( a $( a + b - 9 ) ( a + b + 1 )$

Multiple Choice

Factor completely: ( a + b ) ² - 8( a + b ) - 9

A) $( a + b - 9 ) ( a + b + 1 )$
B) $( a + b + 9 ) ( a + b - 1 )$
C) $( a + b - 3 ) ( a + b + 3 )$
D) $( a + b + 3 ) ( a + b - 3 )$