Find the Domain of the Rational Function $$f ( x ) = \frac { 9 x ^ { 2 } } { 6 - x }$$

Multiple Choice

Find the domain of the rational function.
- $$f ( x ) = \frac { 9 x ^ { 2 } } { 6 - x }$$

A) $\{ x \mid x$ is a real number $\}$
B) $\{ x \mid x$ is a real number and $x \neq 0 \}$
C) $\{ x \mid x$ is a real number and $x \neq - 6 \}$
D) $\{ x \mid x$ is a real number and $x \neq 6 \}$