Which of the following statements about price controls are correct? (A) A price ceiling is set below the equilibrium price to protect consumers, often resulting in a shortage. (B) A price floor is set above the equilibrium price to ensure that producers receive a fair minimum price. (C) Price ceilings above the equilibrium price create a situation of surplus in the market. (D) The Food Availability Decline (FAD) theory applies to situations where shifts in supply and demand impact food security.