Find the Domain of the Rational Function $$f ( x ) = \frac { x + 6 } { x ^ { 4 } - 4 }$$

Multiple Choice

Find the domain of the rational function.
- $$f ( x ) = \frac { x + 6 } { x ^ { 4 } - 4 }$$

A) $\{ x \mid x \neq 0 , x \neq 4 \}$
B) $\{ x \mid x \neq - 2 , x \neq 2 \}$
C) all real numbers
D) $\{ x \mid x \neq - 2 , x \neq 2 , x \neq - 6 \}$