Following a violation, the official has properly signaled and awarded a throw-in to Team A at a designated spot. No Team A player comes to the spot even though the official has allowed ample time for them to respond. The official then places the ball on the floor and begins the five-second count.
(a) Both A1 and A2 step out of bounds and A1 picks up the ball; or
(b) both A1 and A2 step out of bounds and A1 picks up the ball and hands it to A2.