Find the Range of the Function $f ( x ) = \frac { 4 x } { x - 2 }$

Multiple Choice

Find the range of the function $f ( x ) = \frac { 4 x } { x - 2 }$ by finding the domain of $f ^ { - 1 } ( x )$ .

A) $\quad ( - \infty , 2 ) \cup ( 2 , \infty )$
B) $\quad ( - \infty , 4 ) \cup ( 4 , \infty )$
C) $\quad ( - \infty , \infty )$
D) $\quad ( - \infty , 0 ) \cup ( 0 , \infty )$
E) $\quad ( 0 , \infty )$