I left one question empty (because I couldn't even narrow it down) and answered one wrong and still better than 93,7% of test takers. Seems like the questions were pretty hard.
Yeah few people get the question for when it was founded because it's natural to assume it's associated with ancient Egypt like Luxor and Memphis, or even with Greek conquests like Alexandria, though it wasn't a thing until the Fatimids founded it.
Headquarters: Saint Mark's Coptic Orthodox Cathedral, Cairo, Egypt
But it seems you are correct