Please choose the correct ending to complete the given sentence: Assembling bicycle: She later demonstrates how to remove the saddle off. She puts the new one on and then uses tools to tighten it back on. she

Ending1: sits down on her horse and pulls out tools to apply the saddle to the back of the horse. Ending2: speaks to another woman while marking her cheeks while showing off. Ending3: puts the new one onto the horse's hind legs and allows the rear legs to dangle over the pommel. Ending4: uses a screwdriver to tighten the screws and adjust the level.

Answer format: ending1/ending2/ending3/ending4