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 takes a wrench and adjusts the seat. He mounts the bicycle to test the seat position. he

Ending1: readjusts the handlebar position. Ending2: undoes the handle bars and tightens the handlebars. Ending3: then starts to pull the cord of the bicycle. Ending4: then mounts the bike and pulls the wheels all the way up above his knees, demonstrating how to properly adjust the seat by moving his hands up and down and around and then begins smoothing on the flaps again.

Answer format: ending1/ending2/ending3/ending4