Please choose the correct ending to complete the given sentence: Tai chi: A picture of a man is shown and then drawings of human vertebrae. the man in gray out

Ending1: places his spare leg on the shoulder hole of a carved metal object and begins to attach the second arm of the device, some gears are then shown and a device is held in his hand. Ending2: comes back in and shows a bedroom. Ending3: puts the skin back together and then looks at his work and smiles. Ending4: is standing in a room and started to rotate his hands forward and backward.

Answer format: ending1/ending2/ending3/ending4