Find the absolute maximum and minimum values of the function, if they exist, over the indicated interval. Also indicate the x-value at which each extremum occurs. f (x) = 8x ; [- 8,8] . . . Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. O A. The absolute maximum value is at x = and the absolute minimum value is at x = (Use a comma to separate answers as needed.) O B. The absolute minimum value is at x = and there is no absolute maximum. (Use a comma to separate answers as needed.) O C. The absolute maximum value is at x = and there is no absolute minimum. (Use a comma to separate answers as needed.) O D. There is no absolute minimum and there is no absolute maximum