[niuzeta]

that is a good point. Funnily enough, this is the kind of trick question which I would fall for the first time encountering, had it been asked as a quiz without any label, but the whole 50% of great students have failed labelling made me think, not doubting my answer, but doubting the difficulty of the question that I had expected.

I will need to get my introspection goggles before thinking this further.