which of the following functions is shown in the graph below 5

Which of the following functions is shown in the graph below?

A. $f left parenthesis x right parenthesis space equals space fraction numerator 1 over denominator x squared plus 4 x plus 4 end fraction$

B. $f left parenthesis x right parenthesis space equals space fraction numerator 1 over denominator x squared minus 4 x plus 4 end fraction$

C. $f left parenthesis x right parenthesis space equals space fraction numerator 1 over denominator x squared plus 4 end fraction$

D. $f left parenthesis x right parenthesis space equals space fraction numerator 1 over denominator x squared minus 4 end fraction$