Interesting question. But two of the "restrictions" are not restrictions and only one non-restriction is asked for. 😉
It was however easy to see which of them was the one that was wanted, just by looking at the wording - it was the only one not expressed as a negative; all the commenters complaining about "double negative" should have noticed that the one answer said "must have a different name than" (:sick: what a barbarous Americanism :laugh:)instead of "cannot have the same name as", avoiding the double negative, so was clearly the odd one out - ie the required answer.
Incidentally, only 37% of those who were marked wrong so far got it wrong by picking the wrong answer that was actually one of the two right answers. So half the answers to date had chosen neither of the actually right answers.
Of course the question says "which of these are" not "which of these is" so it's asking for more than one option to be selected; but it returns "wrong" when one right single selection is chosen and "righ" when the other right single selection is chosen.