Given that the polynomial f(x) has degree 4, which of the following most accurately describes the number of turning points of f ( x ) ? Select the correct answer below: The graph of f(x) has at least 5 turning points. The graph of f(x) has at least 4 turning points. The graph of f(x) has at most 5 turning points. The graph of f(x) has at most 3 turning points. The graph of f(x) has at most 4 turning points. The graph of f (x) has at least 3 turning points