Please choose the correct ending to complete the given sentence: Doing crunches: A female is laying on her back exercising inside of a gym. she

Ending1: is moving fast and quickly, enjoying her time. Ending2: is wearing black and pink and just looks very comfortable while she works out. Ending3: moves back and fourth slowly as she continues to exercise. Ending4: is biking backwards while not raising her head to look at the camera.

Answer format: ending1/ending2/ending3/ending4