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.
- $$f ( x ) = \frac { 1 } { x ^ { 2 } - 1 }$$

A) $( 1,0 ) , ( 0 , - 1 ) , ( - 1,0 )$
B) $( 1,0 ) , ( - 1,0 )$
C) $( 0 , - 1 )$
D) No turning points