Find the absolute extrema of the function, if they exist, over the indicated interval. Also indicate the x-value at which each extremum occurs. If no interval is specified, use the real numbers, ( - co, co). (x) = x; [0,4096] Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. O A. The absolute maximum is at x = and the absolute minimum is at x = (Use a comma to separate answers as needed.) O B. The absolute minimum is at x = and there is no absolute maximum. (Use a comma to separate answers as needed.) O C. The absolute maximum is at x = and there is no absolute minimum. (Use a comma to separate answers as needed.) O D. There is no absolute maximum and no absolute minimum