Find $\frac { f ( x + h ) - f ( x ) } { h }$

Multiple Choice

Find $\frac { f ( x + h ) - f ( x ) } { h }$ for the given function.
- $$f ( x ) = \frac { 1 } { x - 4 }$$

A) $- \frac { 1 } { ( x - 4 ) ( x + h - 4 ) }$
B) $\frac { 1 } { ( x - 4 ) ( x + h - 4 ) }$
C) $- \frac { 1 } { 2 x + h - 8 }$
D) $\frac { 1 } { 2 x + h - 8 }$