calculus question

x2 - 8x +7 Follow the steps for graphing a rational function to graph the function F(x) = x2 - 2x + 1 Use the real zeros of the numerator and denominator of F to divide the x-axis into intervals. Determine where the graph of F is above or below the x-axis by choosing a number in each interval and evaluating F there. Select the correct choice below and fill in the answer box(es) to complete your choice. O A. The graph of F is below the x-axis on the interval(s) (Type your answer in interval notation. Use a comma to separate answers as needed.) O B. The graph of F is above the x-axis on the interval(s) and below the x-axis on the interval(s) (Type your answers in interval notation. Use a comma to separate answers as needed.) O C. The graph of F is above the x-axis on the interval(s) (Type your answer in interval notation. Use a comma to separate answers as needed.)