10 count ends

[Chris Whitten]

NFHS rules: A1 is dribbling in his backcourt under pressure from B1 and B2. The official is at 9 on his count when a)A1's foot touches the floor in the frontcourt, or b)the ball dribbled by A1 touches the floor in the frontcourt, or c)A1 throws a bounce pass to A2 that touches the floor in the frontcourt before the official reaches 10 on his count. Is a, b, or c enough for the official to drop his 10 count (no violation) even though frontcourt status has not been achieved by any player?