Please choose the correct ending to complete the given sentence: Tennis serve with ball bouncing: There are balls left all over the court. The woman is hitting balls again while the trainer watches. a couple

Ending1: of different balls are in the locker rooms to protect each other. Ending2: are walking by behind the fence. Ending3: of teams are when a woman on the same team hits the balls back to her. Ending4: stands up and they start hitting balls again.

Answer format: ending1/ending2/ending3/ending4