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Answer the following questions about the function whose derivative is f' (x) = x (x - 5). 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 fis/are x = 0,5 . (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 increasing on the open interval(s) and never decreasing. O B. The function f is increasing on the open interval(s) , and decreasing on the open interval(s) O C. The function f is decreasing on the open interval(s) and never increasing