Please choose the correct ending to complete the given sentence: Tennis serve with ball bouncing: A man is standing on a tennis court. the man

Ending1: walks out onto the court and stretches then bounces the ball on the ground. Ending2: takes a racket and bounces a tennis ball. Ending3: starts by spinning himself a ball. Ending4: picks up a tire.

Answer format: ending1/ending2/ending3/ending4