Please choose the correct ending to complete the given sentence: Cleaning shoes: An introduction is shown for a video about how to clean running spikes. a guy

Ending1: begins to show off a vacuum. Ending2: explains that he will clean the spikes while showing the dirt on the spikes. Ending3: in a clothes and shirt is shown wiping down a grey wall with a cloth. Ending4: shows his bare back to the camera while crouching down.

Answer format: ending1/ending2/ending3/ending4