A town has both Domino's and Pizza Hut. Domino's recently lowered its menu prices through the "$5 large one-topping" promotion to expand market share. This will lead to a(n) in demand for Pizza Hut's pizzas. If pizza is a normal good, an increase in the average household income will lead to a(n)_____________ in demand for pizzas. decrease; decrease. increase; increase. increase; decrease. decrease; increase