f (x) = x4 - 5x3 + 3x2 +9x- 3; (-5,5) O A. local minimum at ( - 0.57, - 6.12) local maximum at (1.32,5.64) local minimum at (3, - 3) O B. local minimum at ( - 1, - 6) local maximum at (1,6) local minimum at (3, - 3) O C. local minimum at ( - 0.61, - 5.64) local maximum at (1.41,6.12) local minimum at (3, - 3) O D. local minimum at ( - 3, -3) local maximum at ( - 1.32,5.64) local minimum at (0.57, - 6.12)