Find the Domain of the Rational Function $$f ( x ) = \frac { 7 x } { x - 4 }$$

Multiple Choice

Find the domain of the rational function.
- $$f ( x ) = \frac { 7 x } { x - 4 }$$

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