Mathematical Conundrum or Not? People want to wrap this question up in a nice bow, with everything in its place, that's why some think 0% should be C), as they think it makes it nice and tidy.
Some want an answer, even though the question, which does have an answer, can't be answered. That is where the 33% comes in, they need it to have a best answer. It is human nature, to try and put everything in its place even if it has no place; we are the diligent organizers of an endless chaos.
However, to get to those points they must redefine the question; they must change the question. As if they are trying to avoid the original question, because it messes with their human nature.
The question as it is in the OP is the best version if it, as it is nonsensical chaos on more levels than one, which is the point. It is a reminder that these systems we have built, like mathematics, are not perfect and they only work up to a point. It is a reminder that for all our great insights, our understanding of even our own concepts is incomplete.