Find the X-Intercepts (If Any) for the Graph of the Quadratic

Multiple Choice

Find the x-intercepts (if any) for the graph of the quadratic function.
- $$f ( x ) = x ^ { 2 } - 1$$

A) No x-intercepts
B) $( - 1,0 )$
C) $( - 1,0 )$ and $( 1,0 )$
D) $( 1,0 )$