For Standard... caps you at 16-18 as the equivalent of a 20 if i recall correctly, but with English it's not really a specific mark sort of thing, having one related when asked for two will lower the markers perception of your essay and that will lead to the lost marks. I suggest you prepare a few quotes for Mod A on a second related text even if a simple one like weapons training, but it it is extremely unlikely that they will ask for TWO and highly unlikely they will ask for AT LEAST ONE.