Please choose the correct ending to complete the given sentence: Tennis serve with ball bouncing: A woman is hitting tennis balls from a basket while her trainer gives her instructions. She continues to hit the ball while the trainer rakes through the basket. there

Ending1: is a timer in the back of the basket. Ending2: is one person stopping to watch her as the trainer makes certain that she follows her every motion. Ending3: is a golf cart parked behind the woman. Ending4: are balls left all over the court.

Answer format: ending1/ending2/ending3/ending4