Please choose the correct ending to complete the given sentence: Fun sliding down: A guy is outside playing a guitar. A boy rides a scooter. a child

Ending1: is playing a flute outside on a stand. Ending2: slides down a slide. Ending3: walks behind the guy. Ending4: gets out of the tube and jumps on, then he is seen walking out.

Answer format: ending1/ending2/ending3/ending4