Three desk shelves—I, II, and III—are being stocked with seven types of food:Bread (B), Biscuits (Bi), Pizzas (P), Shakes (S), Cake (C), Sweet (Sw), Sandwich (Sa)Rules:Bread and Cake must be in the same shelf.Biscuits and Shakes cannot be in the same shelf as Pizzas.Biscuits and Shakes cannot be in the same shelf as Sweet.Sweet must be in Shelf I or Shelf II.No shelf contains more than three types of food.Question:Which of the following is an acceptable arrangement for Shelf I, Shelf II, and Shelf III, respectively?