If you look in the full version of the Air Almanac in the explanations it says :-
in note 2 - that further correction graphs and tables are to be used to correct for the height of the observer. Option D true
in note 4 - sunrise, sunset & twilight are for the Greenwich meridian and it goes on to state there is no significant error in converting to LMT (other than using longitude arc to time). Options B & C true.
So on that A is correct, however I agree not a good question.