UNLESS YOU CAN SWIM, YOU AREN’T ALLOWED TO SAIL THIS BOATA. IF YOU...

29. Unless you can swim, you aren’t allowed to sail this boatA. If you can’t swim, you’ll have to go in this boatB. You may sail this boat whether you can swim or notC. Anyone who wants to sail this boat must be able to swimD. The only person allowed to swim are those in the boat