Find Vertical Asymptotes of the Following Function $g ( x ) = \frac { x - 3 } { x ^ { 2 } - 9 }$

Multiple Choice

Find vertical asymptotes of the following function. $g ( x ) = \frac { x - 3 } { x ^ { 2 } - 9 }$

A) $x = - 3$
B) $x = 3$
C) $x = 0$
D) $x = - 9$
E) $x = 9$