Answer the following questions about the function whose derivative is f'(x) = x ( x + 2 ). a. What are the critical points of f? b. On what open intervals is f increasing or decreasing? C. At what points, if any, does f assume local maximum and minimum values? A. The critical point(s) of f is/are x = - 2,0 (Simplify your answer. Use a comma to separate answers as needed.) O B. The function f has no critical points. b. Determine where f is increasing and decreasing. Select the correct choice below and fill in the answer box to complete your choice. (Type your answer in interval notation. Use a comma to separate answers as needed.) O A. The function f is decreasing on the open interval(s) and never increasing- O B. The function f is increasing on the open interval(s) and never decreasing. O C. The function f is increasing on the open interval(s) and decreasing on the open interval(s)