Please choose the correct ending to complete the given sentence: Playing pool: . a man in a black shirt and white gloves

Ending1: is throwing darts at a board. Ending2: is standing next to a table that has food being boiled in a pan. Ending3: places billiard balls on a pool table. Ending4: is showing how to use a plastic arm can to play against two different types of lacrosse.

Answer format: ending1/ending2/ending3/ending4