Use Graphical Methods to Find Any Turning Points of the Graph

Multiple Choice

Use graphical methods to find any turning points of the graph of the function.
- $$y = \frac { 6 x } { x ^ { 2 } + 1 }$$

A) $( 1,0 )$ and $( - 1,0 )$
B) $( 0,0 )$
C) $( - 1 , - 3 )$ and $( 1,3 )$
D) $( 0,0 )$ and $( 1,0 )$