Let $f ( x ) = \frac { 4 x } { 3 x + 5 }$

Multiple Choice

Let $f ( x ) = \frac { 4 x } { 3 x + 5 }$ Then $f ^ { \prime } ( x )$ is

A) $\frac { 4 } { 3 }$
B) $\frac { 20 } { 3 x + 5 }$
C) $- \frac { 20 } { ( 3 x + 5 ) ^ { 2 } }$
D) $\frac { 20 } { ( 3 x + 5 ) ^ { 2 } }$
E) $\frac { 24 x - 5 } { ( 3 x + 5 ) ^ { 2 } }$