Please choose the correct ending to complete the given sentence: Tennis serve with ball bouncing: A young teenaged boy is standing outside of the house with a tennis ball and racket. He goes to the tennis court and begins to talk about the game of tennis. he

Ending1: goes and retrieves the ball and continues talking about it. Ending2: serves the tennis ball back and forth between the two young men, and backs them forward all the way. Ending3: does some stretches for a little but and then gets ready to hit the ball over to the other side of the court. Ending4: stops for a moment to explain that the ball is used mostly in the backyard, which includes several tennis courts to play in.

Answer format: ending1/ending2/ending3/ending4