Suppose pizzas and burgers are substitutes. If the price of pizza increases, what happens in each market?
a.Move upward and to the left along the demand curve for pizzas and the demand curve for burgers shifts to the right
b.Move upward and to the left along the demand curve for burgers and the demand curve for pizzas shifts to the right
c.Move downward and to the right along the demand curve for burgers and the demand curve for pizzas shifts to the left