Please choose the correct ending to complete the given sentence: Tumbling: The girl does a series of flips and a spin. We see a title screen and then see the girls bloopers. we

Ending1: see a boy with a whistle and ear muffs. Ending2: then see pages of text explaining and showing things to do with the videos. Ending3: see the ending screen. Ending4: see girls in flooring machines working and warming up.

Answer format: ending1/ending2/ending3/ending4