Please choose the correct ending to complete the given sentence: Zumba: People dance in a studio while a trainer shows a sign. then

Ending1: , people continue dance on the floor and then the trainer show. Ending2: , people dance in an exercise room, then the trainer is in the auditorium. Ending3: , a group of little girls dance together while a trainer explains the moves. Ending4: , the trainer see the students, but he with a rucksack.

Answer format: ending1/ending2/ending3/ending4