I can't believe I didn't get it!!!
I need to work on my inclusivity skills. Full marks all round for your family, it must have assumed sure easy for your son although you are right. It would have been bad off he didn't!
I shall check out these teasers because my brain is obviously turning to mush 😜
Don't worry, every week that I use one I have to study it like I'm being quizzed on it, just in case. Some of them I have no idea how they got those answers and rather than admit that publicly I just excluded from my list. Just don't tell. Yes I'm pretty sure that my the Young some would have been taught the right answer. LOL