Please choose the correct ending to complete the given sentence: Tennis serve with ball bouncing: The video is about a tennis tutorial and drill by edgar giffenig. there

Ending1: is a game of racketball being held in a backyard. Ending2: are headphones in the game as the video continues to show different tennis techniques in different tennis schools. Ending3: are 2 men playing tennis in a large room and presenting various tennis high kicks. Ending4: are two lady tennis players on a clay court who are demonstrating how to throw the ball up high to the partner.

Answer format: ending1/ending2/ending3/ending4