Simplify the expression. fraction numerator 4 b squared minus 16 over denominator b plus 2 end fraction

I’m studying for my Algebra class and don’t understand how to answer this. Can you help me study?

Simplify the expression.

$fraction numerator 4 b squared minus 16 over denominator b plus 2 end fraction$

A. 4(b – 2)

B. 4(b + 2)

C. 2(b – 8)

D. $fraction numerator 2 left parenthesis b squared minus 4 right parenthesis over denominator b end fraction$