A Snowboarder Coasts on a Smooth Track That Rises from One

A snowboarder coasts on a smooth track that rises from one level to another. If the snowboarder's initial speed is 4 m/s, the snowboarder just makes it to the upper level and comes to rest. With a slightly greater initial speed of 5 m/s, the snowboarder is still moving to the right on the upper level. What is the snowboarder's final speed in this case?

A) 1 m/s
B) 2 m/s
C) 3 m/s
D) 4 m/s
E) 5 m/s