Please choose the correct ending to complete the given sentence: Rope skipping: Three of them at the front roll to the side and retreat to the back. The scene changes to a different group doing jump rope tricks. the scene

Ending1: changes to another set and the jump roping repeats. Ending2: changes to the original group performing jump rope tricks. Ending3: goes back to the jump ropes in the beach area. Ending4: switches back to the jumping rope tricks themselves.

Answer format: ending1/ending2/ending3/ending4