[Zoochy]

1) A-1's try rebounds off the backboard and is batted towards the division line by A-2. A-3, while airborne from frontcourt, catches the ball and lands in the backcourt.
2) A-1's try rebounds off the backboard and is batted towards the division line by B-1. A-3, while airborne from frontcourt, catches the ball and lands in the backcourt.
3) A-1's try rebounds off the backboard towards the division line. A-3, while airborne from frontcourt, catches the ball and lands in the backcourt.
4) A-1's Throw-in is batted towards the division line by A-2. A-3, while airborne from frontcourt catches the ball and lands in the backcourt.
5) A-1's Throw-in is towards the division line. A-3, while airborne from frontcourt catches the ball and lands in the backcourt.

Which one(s) is/are legal?