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, (-0,00). f(x)=5x: [-243,0] Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. OA. The absolute maximum is at x= and the absolute minimum is (Use a comma to separate answers as needed.) and there is no absolute minimum. B. The absolute maximum is at x= (Use a comma to separate answers as needed.) at x= and there is no absolute maximum. OC. The absolute minimum is (Use a comma to separate answers as needed.) OD. There is no absolute maximum and no absolute minimum. at x=