Factor the Expression Completely $7 ( x + y ) ^ { 2 } + ( x + y ) - 8$

Multiple Choice

Factor the expression completely. If the expression is prime, so indicate. $7 ( x + y ) ^ { 2 } + ( x + y ) - 8$

A) $( 7 x + 7 y + 8 ) ( x + y - 1 )$
B) $( 7 x + 7 y - 8 ) ( x + y + 1 )$
C) $( 8 x + 8 y + 7 ) ( x + y - 1 )$
D) $( 8 x + 8 y - 7 ) ( x + y + 1 )$
E) prime