A survey indicated that chocolate ice cream is America's favorite ice-cream avor. For each of the following, indicate the possible effects on the demand and/or supply equilibrium price, and equilibrium quantity of chocolate ice cream. a. A severe drought in the Midwest causes dairy farmers to reduce the number of milk- producing cows in their herd by a third. These dairy farmers supply cream that is used to manufacture chocolate ice cream. b. A new report by the American Medical Association reveals that chocolate does, in fact, have signicant health benets. c. The discovery of cheaper synthetic vanilla avoring lowers the price on vanilla ice cream. d. New technology for mixing and freezing ice cream lowers manufacturers' costs of producing chocolate ice cream