Folks,
Perhaps we should look at the examination instructions.
How many of you recall, some time back, such instructions for a CASA multi-choice examination said words to the effect: "If no right answer, check the least wrong".
There have been many cases, over the years where lore and law on a particular aviation subject have been confused, not to be confused with "policy" versus "law".
ie: Does the C.of G of a DC-3/C-47 change when the undercarriage is retracted. Engineering answer: Yes. Policy answer, hence the exam answer: No.
Tootle pip!!