If you chose "C", you were correct. There were a hundred birds on the water at legal. Mostly wood ducks, and I didn't get a single one! I pulled back on a ton of shots because I knew I wouldn't be able to retrieve them if I hit them. Next time I'm bringing a rod and reel. Out of all the ducks I saw, of course I hit ringnecks. I had a good time though just watching the ducks come in.
These were all wood ducks just out of range in 7 ft of water.