8. Please show your work

I ind the x-values of all points where the function has any relative extrema. Find the value(s) of any relative extrema ((X) = -x 3x +9x 5 Select the correct choice below and, if necessary, fill in any answer boxes within your choice O A. There are no relative minima. The function has a relative maximum of | |at x = (Use a comma to separate answers as needed.) B. The function has a relative minimum of |atx= and a relative maximum of |atx= (Use a comma to separate answers as needed ) C. There are no relative maxima. The function has a relative minimum of at x = (Use a comma to separate answers as noded ) OD. There are no relative extrema