I am not confused. My notes are incorrect. They clearly state that the spin axis and the sensitive axis are the same thing. This is clearly nonsense, as many people have pointed out. As for it being a standard JAA trick, the question was written by the FTO, not the JAA, and I don't fall for their tricks anyway,
TB
PS. Anyway, I got the question right, I just knew that it contradicted common sense if my notes were correct and the spin axis and the 'sensitive' axis were the same thing. I shall point this out to my instructor and hopefully we will get it fixed in the notes (and pigs might fly!)