Assume you buy three goods: hamburgers, french fries, and pizza. You always prefer your hamburger with french fries. Also, you consume either hamburgers and french fries together or pizzas at a time. If the price of hamburgers increases, the demand for (Select all that apply.): Check all that apply.
a. pizza Increases
b. french fries decreases.
c. french fries increases
d.pizza decreases

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