Indicate how you think each of the following would shift demand in the indicated market: a. The income of buyers in the market for Adirondack vacations increase. The demand curve would (Click to select) b. Buyers in the market for pizza read a study linking pepperoni consumption to heart disease. The demand curve would (Click to select) c. Buyers in the market for gas-powered cars learn of an increase in the price of electric cars (a substitute for gas-powered cars). The demand curve would (Click to select) d. Buyers in the market for electric cars learn of an increase in the price of electric cars. The demand curve would (Click to select)