Please choose the correct ending to complete the given sentence: Assembling bicycle: A man stands behind a white bicycle in what appears to be a store and speaks to the camera. he

Ending1: clamps his mouth and tightens his grip on the handles as he begins to step up and down on the bicycle. Ending2: then demonstrates how to use the bicycle using a mesh tool. Ending3: takes a wrench and adjusts the seat. Ending4: reveals that his bike is located inside a car wash.

Answer format: ending1/ending2/ending3/ending4