Graph of f 12 . The graph of the function fis shown above for 0 S x

12. 13. 1 C) Graph of f The graph ofthe function fis shown above for 0 x S 3. Of the following, which has the least value? 3 (B) Left Riemann sum approximation of with 4 subintervals of equal length 3 (C) Right Riemann sum approximation of with 4 subintervals of equal length (D) Midpoint Riemann sum approximation of with 4 subintervals of equal length (E) Trapezoidal sum approximation of with 4 subintervals of equal length o 5 1 2 3 4 The polynomial functionf has selected values of its second derivative f" given in the table above. Which of the following statements must be true? (A) fis increasing on the interval (0, 2). (B) fis decreasing on the interval (0, 2). (C) f has a local maximum at x = l. (D) The graph off has a point of inflection at x = l. (E) The graph off changes concavity in the interval (0, 2).