49 Answer the questions below about the function whose derivative is f'(x) = 1-2 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? 1 x#0. a. What are the critical points of f? Select the correct choice below and, if necessary, fill in the answer box within OA. x= (Use comma to separate answers as needed) OB. The function f has no critical points. your choice.