13. Find the zeros of the function f(x) = x3 – 2x2 – 19x + 20, and ) + describe the behavior of the graph at each zero. А The graph touches the x-axis at 4, and it crosses the x-axis at -1 and -5. B The graph touches the x-axis at В 4, -5, and 1. C The graph crosses the x-axis at 5, 1, and -4. D The graph touches the x-axis at -4, and it crosses the x-axis at 1 and 5.