What is the correct procedure?

[Mark T. DeNucci, Sr.]

New play same situation:

1) B1 makes a free throw.

2) A1 takes the ball out-of-bounds for the ensuing throw-in and passes the ball inbounds to A2.

3) A2 immediately fires a baseball pass to A3 who is sprinting down the court.

4) A3 catches the ball in Team A's free throw lane and immediately shoots a layup which is successful.

5) At this point, the officials discover that the game clock as not started.

Question: a) Does A3's field goal count and the game is resumed by a throw-in by Team B anywhere along the endline in its backcourt? Or b) Does must Team A have to do its throw-in after B1's free throw all over again?

MTD, Sr.