Please choose the correct ending to complete the given sentence: Playing water polo: Several people are swimming in the pool. They are wearing caps on their heads. A life guard looks on. there

Ending1: is a shot put behind a net. Ending2: is a boat pulling a boat behind him. Ending3: is a net set up. Ending4: is a dog that runs around in the pool.

Answer format: ending1/ending2/ending3/ending4