Please choose the correct ending to complete the given sentence: Using parallel bars: A man is doing a gymnastics routine on parallel bars. he

Ending1: goes from there, doing a flip and a backwards flip on the parallel bars. Ending2: does several knee lifts, then lays on the parallel bars. Ending3: dismounts and lands on a mat. Ending4: performs at first, jumping between bars.

Answer format: ending1/ending2/ending3/ending4