Please choose the correct ending to complete the given sentence: Doing karate: A boy in karate class bows before a performance. the boy

Ending1: then flips multiple times to catch his balance as he prepares for a kick. Ending2: in karate suit begins to chase after and twirl around the students. Ending3: begins to stroke his cello, forming three and two. Ending4: performs a karate routine with hand scythes.

Answer format: ending1/ending2/ending3/ending4