Find the Domain of the Rational Function $f ( x ) = \frac { x ^ { 3 } + 6 x ^ { 4 } } { x ^ { 2 } + 64 }$

Multiple Choice

Find the domain of the rational function.
$f ( x ) = \frac { x ^ { 3 } + 6 x ^ { 4 } } { x ^ { 2 } + 64 }$

A) $\left\{ x \mid x \text { is a real number and } x \neq 0 , x \neq - \frac { 1 } { 6 } \right\}$
B) $\{ x \mid x \text { is a real number and } x \neq - 8 \}$
C) $\{ x \mid x \text { is a real number and } x \neq - 64 \}$
D) $\{ x \mid x \text { is a real number } \}$