Find the Domain of the Rational Expression $f ( x ) = \frac { x ^ { 2 } - 4 } { x ^ { 2 } + 13 x + 36 }$

Multiple Choice

Find the domain of the rational expression.
- $f ( x ) = \frac { x ^ { 2 } - 4 } { x ^ { 2 } + 13 x + 36 }$

A) $\{ x \mid x$ is a real number and $x \neq 0 \}$
B) $\{ x \mid x$ is a real number and $x \neq - 4 , x \neq - 9 \}$
C) $\{ x \mid x$ is a real number and $x \neq 4 , x \neq - 9 \}$
D) $\{ x \mid x$ is a real number and $x \neq 2 , x \neq - 2 \}$