Identify all holes in the function, algebra homework help

Identify all holes in the function below.

f left parenthesis x right parenthesis space equals space fraction numerator x squared space minus space 4 x space minus space 5 over denominator x squared space plus space 3 x space plus thin space 2 end fraction

A. x = -2

B. x = -1

C. x = 5

D. x = 1