Please choose the correct ending to complete the given sentence: Tennis serve with ball bouncing: A man is seen inside a gym. He is holding a racquet and ball in his hands. he

Ending1: then throws the ball off into the distance and another person walks into frame. Ending2: serves the ball over the net several times. Ending3: then backs up to throw the ball. Ending4: continues speaking to the camera and turns back to talk to the camera.

Answer format: ending1/ending2/ending3/ending4