Find the Absolute Extrema of the Function $f ( x ) = \frac { 4 x } { x ^ { 2 } + 1 }$

Multiple Choice

Find the absolute extrema of the function $f ( x ) = \frac { 4 x } { x ^ { 2 } + 1 }$ on the interval $[ 0 , \infty )$ .

A) The maximum of the function is 1 and the minimum of the function is 0.
B) The maximum of the function is 0 and the minimum of the function is -2.
C) The maximum of the function is -2 and the minimum of the function is 0.
D) The maximum of the function is 2 and the minimum of the function is 0.
E) The maximum of the function is 0 and the minimum of the function is 2.