Please choose the correct ending to complete the given sentence: Doing crunches: A lady stands and talks in a gym. She points to her abdomen, then lays on a bench. the lady

Ending1: explains a muscle storage technique. Ending2: holds the bench and and lifts her abdomen and legs. Ending3: gets put on an elliptical. Ending4: squats again and aims for her belly button while sits.

Answer format: ending1/ending2/ending3/ending4