Use the X-Intercepts to Find the Intervals on Which the Graph

Multiple Choice

Use the x-intercepts to find the intervals on which the graph of f is above and below the x-axis.
- $$f ( x ) = ( x + 15 ) ^ { 2 }$$

A) above the $x$ -axis: $( - \infty , - 15 )$
below the $x$ -axis: $( - 15 , \infty )$

B) above the $x$ -axis: $( - \infty , - 15 ) , ( - 15 , \infty )$
below the $x$ -axis: no intervals

C) above the x-axis: $( - 15 , \infty )$
below the $x$ -axis: $( - \infty , - 15 )$

D) above the $x$ -axis: no intervals
below the $x$ -axis: $( - \infty , - 15 ) , ( - 15 , \infty )$