2. Marcella owns Pizza Surplus, a Chicago pizzeria specializing in authentic thin-crust pizzas using high quality ingredients imported from Italy. She rents the building that houses PS. She purchased (and paid for) a very expensive wood-fired pizza oven made in Naples. She pays a city restaurant license. The restaurant is small, so her only employees are herself and her husband, Fred. Her only other costs are utilities and ingredients for the pizzas. Which costs described are of each type listed below? Explain briefly. Make any assumptions you might need. (Note: this is a "thought question.") - sunk cost - opportunity cost - fixed, variable, or marginal cost - avoidable cost