Factor Completely $b ^ { 2 } - 4$ A) $( b - 4 ) ( b + 1 )$

Multiple Choice

Factor completely. Check by multiplying the factors. $b ^ { 2 } - 4$

A) $( b - 4 ) ( b + 1 )$
B) $( b - 4 ) ( b + 2 )$
C) $( b - 2 ) ( b - 2 )$
D) $2 \left( b ^ { 2 } - 2 \right)$
E) $( b - 2 ) ( b + 2 )$