Question 2, *4.3.1 HW Score: 6.25%, 0.25 of 4 Homework: HW 12b: First Derivative Test Il Part 1 of 4 points Points: 0 of 1 Save Answer the following questions about the function whose derivative is f'(x) = 3x(x - 4) a. What are the critical points of ? 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. Find the critical points, if any. Select the correct choice below and, if necessary, fill in the answer box to complete your choice O A. The critical point(s) of f is/are x = (Simplify your answer. Use a comma to separate answers as needed.) O B. The function f has no critical points