Please choose the correct ending to complete the given sentence: Tumbling: A girl is doing somersaults in her front yard. another girl

Ending1: looks at her through a window as she does a backbend, injuring herself. Ending2: is doing flips under her yard. Ending3: is doing ocean jumps in slow motion. Ending4: is doing the same on her back in front of her.

Answer format: ending1/ending2/ending3/ending4