Give the Equations of Any Vertical Asymptotes $$f ( x ) = \frac { x - 9 } { x ^ { 2 } + 9 }$$

Multiple Choice

Give the equations of any vertical asymptotes.
- $$f ( x ) = \frac { x - 9 } { x ^ { 2 } + 9 }$$

A) $x = 3 , x = - 3$
B) $x = - 9$
C) $x = 9$
D) none