Can't tell you all how many times I have seen an absolute beginner snowboarder go to the top of the mountain and attempt a blue course/run(intermediate), with confidence, just because they were riding the latest Burton T-6 ($750 deck) and Flow binding ($300+) set up -plus every other top of the line accessory- only to be taken down the mountain on the back of a ski patrol snowmobile. Happens every day.
Answer is clearly (C)
and I have seen non-injured ones walking down the slope...
never overestimate your ability
True, indeed. I went way too big at Kirkwood last winter and had it not been for a perfect transition on the back side of a certain kicker, I probably would have flown back to Japan in a cast. Always respect the mountain, no matter what gear you use or how experienced you are.