(a) Find the open intervals on which the function shown in the graph is increasing and decreasing. (b) Identify the function's local and absolute extreme values, if any, saying where they occur. 40 20 -80 -60 -40 -20 20 40 60 - 20 - 40 (a) On what open interval(s), if any, is the function increasing? Select the correct choice below and fill in any answer boxes within your choice. O A. The function is increasing on the open interval(s). (Type your answer in interval notation. Use a comma to separate answers as needed.) O B. The function is never increasing