[Solved] Which of the following equations corresponds to an optimal choice point? (i)MRS = PX/PY (ii)MUX/MUY = PX/PY (iii)MUX/PX = MUY/PY (iv)MUX/PY = MUY/PX A) (i) only B) (i), (ii), and (iii) only C) (ii) and (iv) only D) (i), (ii), (iii), and (iv) Intertype Competition: A competitive situation where businesses from different retail formats or industries compete for the same customers. In-Store Restaurants: In-store restaurants refer to dining facilities located within retail stores or shopping centers, offering shoppers the convenience of eating without leaving the premises. Limited-Line Store: Retail outlets that offer a narrow product line with deep assortments within those lines. Women's Lingerie: Women's underwear and nightclothes, often designed to be appealing or erotic.