Please choose the correct ending to complete the given sentence: Assembling bicycle: A screen appears with bike spokes as the background and red words that read "overhauling & adjusting cup & cone hubs" and a website in gray right under the red words. a man

Ending1: smashes a few cones using a squeegee and the illustration is zoomed in. Ending2: is shown encouraging their to use the repair machinery used by post hospital's hospital and a man explaining their technique. Ending3: then enters and from behind he uses tools on the hub to take it apart, clean it thoroughly, grease it, then he puts it all back together and makes sure everything is secured tight. Ending4: then appears in a home and is showing his home and website and how to clean it.

Answer format: ending1/ending2/ending3/ending4