I'm not going by my beliefs. Take yours, or the proverbial "reasonable person's" judgment. Would you or that person judge b) as being true?

Are a) and c) in dispute? Again, my concern is actually not with being downmodded (I would have dropped this long ago if it were); it's with the lack of an explanation. If no one can be bothered to respond to such a post that spells out its reasoning so clearly and claims to have solved the dilemma -- fine, but leave it alone. If you're going to make the effort, try to make sense too.