Find the x-intercepts of the polynomial function. State whether the graph crosses the x-axis, or touches the x-axis and turns around, at each intercept. x5 - 21x3 + 80x = 0

A. 0, crosses the x-axis;
4, crosses the x-axis;
-4, crosses the x-axis;
, crosses the x-axis;
-, crosses the x-axis
B. 0, crosses the x-axis;
16, touches the x-axis and turns around;
5, touches the x-axis and turns around
C. 0, touches the x-axis and turns around;
16, touches the x-axis and turns around;
5, touches the x-axis and turns around
D. 0, touches the x-axis and turns around;
4, crosses the x-axis;
-4, crosses the x-axis;
, crosses the x-axis;
-, crosses the x-axis