Please choose the correct ending to complete the given sentence: Tennis serve with ball bouncing: Very short scenes of athletes training in various sports are shown. A man prepares to play tennis. The man talks to someone off screen. scenes of the man playing tennis

Ending1: are shown, interspersed with short clips of the man talking, while text overlay explains tennis. Ending2: in country are shown. Ending3: in a busy setting with various athletes, fans, coaches, a memorabilia collection, the hula hoops-individual tennis players interviewed. Ending4: in different venues such as a city, beaches, and polo grounds are shown in quick flashes before the closing screen.

Answer format: ending1/ending2/ending3/ending4