Which of the following is the best articulation of Marginalist economics? (A) The additional value a person derives from more consumption is increasingly lower. (B) A commodity has use value and exchange value. The latter is derived from the labour theory of value. (C) All humani nteractions can be modelled mathematically as strategic games (game theory) (D) Most economists are soyjacks and NPCs in the larger world of transhumanist dy- namics.