Please choose the correct ending to complete the given sentence: Doing crunches: A man is sitting on a workout bench. he

Ending1: lays back and starts doing crunches. Ending2: lifts up a tire and puts on a hoola hoop. Ending3: sets up in front of a ball on the machine. Ending4: starts lifting a bar up to a sitting position.

Answer format: ending1/ending2/ending3/ending4