For the Function F, Construct and Simplify the Difference Quotient $\frac { f ( x + h ) - f ( x ) } { h }$

Multiple Choice

For the function f, construct and simplify the difference quotient $\frac { f ( x + h ) - f ( x ) } { h }$
- $f ( x ) = 9 | x | + 4 x$

A) -3h
B) $\frac { 9 | x + h | - 4 h - 9 | x | } { h }$
C) -5h
D) $\frac { - 9 | x + h | - 5 h + 9 | x | } { h }$