Please choose the correct ending to complete the given sentence: Playing polo: People are riding horses around an arena. People are standing outside the arena watching them. the people

Ending1: are shoestring riding in costumes. Ending2: watching turn around and look behind them. Ending3: in the arena ride horses around the arena. Ending4: on the horses try to fight the boarders.

Answer format: ending1/ending2/ending3/ending4