Please choose the correct ending to complete the given sentence: Doing crunches: A woman talks and lie down on the floor, then she bend her legs and lift both. Then, the woman lifts the two legs straight. after

Ending1: , the woman lifts only one leg and the other leg rest bend on the floor. Ending2: , the woman puts her feet on the floor, but then continue to lift the two legs supporting her body, and she falls down. Ending3: , the woman take the rubber tire and puts on the nail. Ending4: , the woman lift arms and legs upside down, then she bend her legs while holding the body with one hand.

Answer format: ending1/ending2/ending3/ending4