Please choose the correct ending to complete the given sentence: River tubing: A man is walking along a group of inner tubes moving them all because they're roped together with some people in most of them. the man

Ending1: squeezes all the excess excess down the tubes until it reaches the center. Ending2: is seen occasionally speaking to someone on the side and wandering around while others join what is going on. Ending3: stops walking and the inner tubes move on their own and he begins talking, pointing and making hand motions. Ending4: has several other people pushed along, they're attached to an inner tube floating quickly down a length of rope.

Answer format: ending1/ending2/ending3/ending4