Please choose the correct ending to complete the given sentence: Doing crunches: A man is lying on his back on a tile floor. he

Ending1: does a flip on to his belly. Ending2: is blindfolded and laying on a beam as he is lifting and tossing himself. Ending3: is trying to do sit ups, slowing down and grimacing as the effort becomes more difficult with each one. Ending4: is shown on a sidewalk painting a picture.

Answer format: ending1/ending2/ending3/ending4