Please choose the correct ending to complete the given sentence: Ping-pong: Two people are seen playing a game of ping pong with one another. they

Ending1: switch sides constantly and attack one another. Ending2: move around the table with the others watching on the side. Ending3: hit the ball back and fourth across the table while people watch on the sides. Ending4: hit the ball against the wall in front of them.

Answer format: ending1/ending2/ending3/ending4