Find the Domain of the Expression $$\frac { x ^ { 2 } - 9 } { x ^ { 2 } + 6 x + 8 }$$

Multiple Choice

Find the domain of the expression.
- $$\frac { x ^ { 2 } - 9 } { x ^ { 2 } + 6 x + 8 }$$

A) $\{ x \mid x \neq 0 \}$

B) $\{ x \mid x \neq 3$ and $x \neq - 3 \}$

C) $\{ x \mid x \neq 4$ and $x \neq 2 \}$

D) $\{ x \mid x \neq - 4$ and $x \neq - 2 \}$