Factor the Following Perfect Square Trinomial $b ^ { 2 } + 4 b + 4$

Multiple Choice

Factor the following perfect square trinomial. $b ^ { 2 } + 4 b + 4$

A) $( b + 2 ) ^ { 2 }$
B) $( b - 2 ) ^ { 2 }$
C) $( b + 4 ) ^ { 2 }$
D) none of these