Please choose the correct ending to complete the given sentence: Doing kickboxing: A man is standing inside a gym. he

Ending1: is wearing a pair of boxing gloves as he shows punches. Ending2: is going back and forth on the beam and pulls himself up and down. Ending3: is holding a long pole. Ending4: is using a long jump rope, trying to move himself forward.

Answer format: ending1/ending2/ending3/ending4