Please choose the correct ending to complete the given sentence: Snow tubing: The person starts at the top of the slope, riding a tube. They quickly slide down and travel through the snowy path. at the bottom

Ending1: they find themselves in a parking lot outside the mall. Ending2: the person stops his machine. Ending3: their tubes start moving, going down through covered ramps. Ending4: , a large pile of tubes stops the person from sliding further.

Answer format: ending1/ending2/ending3/ending4