Two young man and a man play pool hitting white balls with a cue stick. The young man hits balls that land in the pocket of the pool table. then <sep> (A) they serve the ball with a cue stick. (B) , the young man attempts to hit hard balls to returned them, then he serves and misses 4 times. (C) , the young man wins and pushes another ball into the pocket. (D) , the man puts the balls in a metal triangle and arrange others balls.
D