SITUATION: With 4th and Goal at the B7, A33 accepts a direct hand-off and is running the ball. At the B5 yard line, A33 fumbles the ball. B82 cleanly recovers the ball at the B2 yard line and begins to run. During A24's attempt to tackle B82, the ball comes loose at the B3. While the ball comes loose (a) the ball, on its own force, goes out of the back or side of the end zone; or (b) on the B2 yard line, A68, trying to avoid B from recovering the ball, bats the ball, but the ball shoots into B's end zone where it is recovered and downed by B42; or (c) is recovered and downed by A12 in B's end zone; or (d) is recovered by B42 at the 1 yard line, and trying to evade a tackle, enters his own end zone and is tackled there.