Basic hydraulics - from a larger diameter (more water storage) to a smaller diameter storage tank, the PSI is still the same. This is obviously a fake. I ran these experiments when I was a cub scout. I am not sure if those that spread misinformation should be beaten or flogged. At least MunchausenTV has a little fun with it! Robert Boyle' Flask - PS - something that would work is to combine B and C into one container and put a candle under it. This would create more pressure in the lower container and force the liquid into a higher position.