Please choose the correct ending to complete the given sentence: Wakeboarding: People sail in a boat in a river, and a man pulls a string of a person that sets up to perform water ski. Then, the person water ski behind the boat while people watch. the person

Ending1: water skiis using a tube on the river. Ending2: falls in the water, but stands again and continues doing water ski. Ending3: goes in the water wearing skis, then he turns, and then continue standing. Ending4: takes off the ski and continue water skiing, then he stops.

Answer format: ending1/ending2/ending3/ending4