The ball is in flight during a three-point field-goal try by A1 when time for a quarter expires. Following the expiration of time and while the ball is rolling on the ring, B1 tips it into the basket.
Violation by B1. The ball was live until the violation, it then became dead. The field goal does not count. However, the action by B1 is basket interference. Three points are awarded to A1 because of the basket interference by B1 during a three-point try.