Find the Second Derivative Of $f ( x ) = \frac { 2 x } { 3 x ^ { 2 } + 4 x }$

Multiple Choice

Find the second derivative of $f ( x ) = \frac { 2 x } { 3 x ^ { 2 } + 4 x }$ for x ? 0.

A) -6 $( 3 x + 4 ) ^ { - 2 }$
B) (-2) $3 - 2$
C) 2 $( 3 x + 4 ) ^ { - 1 }$
D) 12 $( 3 x + 4 ) ^ { - 3 }$
E) 36 $( 3 x + 4 ) ^ { - 3 }$