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

Ending1: bounces back and forth on the bars of the tennis court. Ending2: bounces the ball a few times. Ending3: hits a tennis ball, knocking pins down. Ending4: is demonstrating in front of several judges.

Answer format: ending1/ending2/ending3/ending4