4. The graph of f is shown in the figure below. If the Mean Value Theorem is applied to f at the end points of [-2, 2], how many c values are there in the interval that satisfy the conclusion? 4 3 y = f(x) 1 -3 +2 -1 0 1 2 3 -1 (A) 1 (B) 2 B (C) 3 (D) 4 (E) none