C is the best...long rows like the rest could be hard to read. You could make the time digits a different color to distinguish them from the scores and make the longer panel work.
On C, the TO/Bonus/Arrow lights could be arranged in a much better way. As they are, it is a bit confusing to know which is which unless you make them different colors. Plus, you're much better off with a digit (smaller than the rest) for timeouts as the number needed varies for each sport. With one more bulb on each side, you could easily indicate single/double bonus.
Perhaps...
Code:
TO **digit**
B **light - light**
Arrow **light**