I wasn't charged with using the wrong word when I wrote "E kāwele 'oe i ke pākaukau," but I was for "E kāwele 'olua i ke pākaukau." Seems just as good to me.
I would certainly accept that the English sentence might be used to address two people. Did you report it as, "My answer should have been accepted"?
Pretty sure I did, but my memory is getting pretty weak...
Is pākaukau an exception to the KEAO rule?
If so, this multiple choice was a bit of a trick question.