Please choose the correct ending to complete the given sentence: Using parallel bars: A strong man is lifting his legs up and down across parallel bars. he

Ending1: is sitting at a bench watching how his feet move back and forth on the padded bars as he sits. Ending2: stands up on a mat. Ending3: is holding onto two rings on the middle of the bars. Ending4: begins to do shrugs on the bars.

Answer format: ending1/ending2/ending3/ending4