Use a graphing calculator or computer to determine which of the given viewing rectangles produces the most appropriate graph of the function f (x) = 10 + 25x – x3.
(a) [– 4, 4] by [– 4, 4]
(b) [– 10, 10] by [– 10, 10]
(c) [– 20, 20] by [– 100, 100]
(d) [– 100, 100] by [– 200, 200]