Please choose the correct ending to complete the given sentence: Using parallel bars: A boy stands next a man, then he raise a hand and walks to perform on the parallel bards. the boy swing on the bars

Ending1: in front of the audience, then the man guide him. Ending2: , and then jumps on the mat. Ending3: in the parallel bards. Ending4: while smiling and singing.

Answer format: ending1/ending2/ending3/ending4