Give the Equation of the Horizontal Asymptote, If Any, of the Function

Multiple Choice

Give the equation of the horizontal asymptote, if any, of the function.
- $$f ( x ) = \frac { x + 9 } { x ^ { 2 } - 25 }$$

A) $y = 1$
B) $y = 0$
C) $y = - 5 , y = 5$
D) no horizontal asymptotes