Please choose the correct ending to complete the given sentence: Snow tubing: The video is shot in first person view along a snowy slope. the person

Ending1: starts at the top of the slope, riding a tube. Ending2: uses a motocross run to accelerate. Ending3: rides down a snowy snowy hill while holding skis. Ending4: sets up a camera in front of him, and people begin to go down.

Answer format: ending1/ending2/ending3/ending4