Whao Has the Final Say?

[tnsteele95]

Watching a girl's game yesterday, it was tied with 3 seconds left. Team inbounds to half court and throws up the ball as buzzer sounds and swoosh. Was very close, inface I would've said it was still in her hands when buzzer sounded. Anyway, one ref immediately signaled a good three pointer, the other ref, again immediately, signaled that the shot was too late. The whole gym when silent waiting on the verdict. Which ref has the final say?