Please choose the correct ending to complete the given sentence: Slacklining: A camera pans all around a forest and leads into a rope tied to a tree. A person is seen tightening the rope followed by walking along the rope. several people

Ending1: are seen walking along a trail pulling a rope behind them in different clips. Ending2: are seen riding their tubes along with others as well as walking along. Ending3: are seen riding field horses in various locations and ends with a snowy mountain. Ending4: are seen walking on the rope as well as bouncing and performing tricks.

Answer format: ending1/ending2/ending3/ending4