Please choose the correct ending to complete the given sentence: Tumbling: We see two girls standing in a room, then perform a flip. We see 2 different girls do different flips. One girl does a back flip. we

Ending1: see 3 girls running did flips. Ending2: see two more girls in a hallway. Ending3: then see four girls do a back flip together. Ending4: see a caption and we see kids riding bmx bikes.

Answer format: ending1/ending2/ending3/ending4