That sounds horribly like the exam which I did and which was declared void because that was one of the questions which had a highly dubious "correct" answer. If it is the same exam then that was only one of several incorrect right answers and the CAA reviewed the paper and made the appropriate changes. PM me if you like as we shouldn't be discussing this openly in case it influences someone who gets the same paper. I hope you passed. If by any mischance you didn't, I should ask your examiner to check that you were given the amended paper. I was very fortunate in having someone who was prepared to support me and have the matter investigated by the CAA. Beagle, where are you getting the cloud base from? As far as I can see there is no cloud base mentioned.