End of game situation offensive foul scenario with a made bucket at the buzzer

[rockchalk jhawk]

This was talked about the other night while were on our way to a game. It's a theoretical situation, but I'd be interested in hearing peoples thoughts.

Let's say tie ball game, last second shot. Picture this sequence of events, in this order. A1 jumps in the air, releases a try, horn sounds, bucket goes in. A1 then crashes into B1 who has obtained legal guarding position, but the crash happens AFTER the horn.

In "Scenario A" the crash happens before A1 has returned to the floor, but again the crash is after the horn, but the shot went and was released before the buzzer.

In "Scenario B" the same situation, except this time A1 has returned one foot to the ground before crashing into B1.

I'd be interested in hearing what people would do in each scenario, and if your answer is based on NFHS or NCAA. I've got my answers, but I'll save them for now.