3\10 @ A30. A23 receives a handoff and is running with the ball. B75 is legally blocked by A68. B75's helmet comes off not due to a foul. A68 leaves the block and B78 stops in his tracks to watch the play. A23 is hit and fumbles. The ball (a) flies into the air and is caught by B75, (b) rolls on the ground where B75 reaches down and picks up the ball, (c) flies in the air and hits B75 in the chest who tries not to catch the ball. It is later downed by either team.
What are the rulings for A, B, and C?
Now add one more adjustment to these. Same situation as A and B. When B75 catches or picks up the ball, he is tackled by A46. What is the ruling?