Find the x-values of all points where the function has any relative extrema. Find the value(s) of any relative extrema.f(x) = -x-3x + 9x +

Find the x-values of all points where the function has any relative extrema. Find the value(s) of any relative extrema.f(x) = -x³-3x² + 9x + 2Select the correct choice below and, if necessary, fill in any answer boxes within your choice.A. There are no relative maxima. The function has a relative minimum of(Use a comma to separate answers as needed.)B. The function has a relative minimum of at x =(Use a comma to separate answers as needed.)C. There are no relative minima. The function has a relative maximum of at x =(Use a comma to separate answers as needed.)D. There are no relative extrema. at x = and a relative maximum of at x =