Question:

Boats A, B and C, all on starboard tack, are approaching a leeward mark to be left to port. When two lengths from the zone, A is clear ahead of B, and C is overlapped with B. When A reaches the zone (position 1), B is overlapped with A and C is still overlapped with B. C rounds the mark inside boat A and B. A protests C.

You are on the protest committee; how would you decide this?