Please choose the correct ending to complete the given sentence: Spinning: An empty room of spin bikes are shown and a woman appears in the corner talking. while

Ending1: standing on a spinning bike using her feet, she begins to speak with people in the bleachers nearby who she is demonstrating tips on how to fix the windbikes. Ending2: talking, she squeegees the bike bar, washing it, then places soap and cloth on the handlebars. Ending3: resting, she has a pink helmet on and is saying hello. Ending4: talking, she begins touching a machine, lifting its seat and talking about it specific functions.

Answer format: ending1/ending2/ending3/ending4