Given the graph of f '(x), the derivative of f(x), which of the following statements are true about the graph of f(x)? Graph is parabola with x-intercepts at x equals 0 and 3 and vertex at x = 1 . The graph of f has a critical point at x = 0. The graph of f has a critical point at x = 1. The graph of f has a point of inflection at x = 1.