Consider the list of goods below. Which of the following are private goods and might, therefore, be provided in socially optimal amounts by private profit-maximizers? Which of the following are private goods, but may require subsidies or taxes to achieve an optimal outcome? Which are public goods and should, therefore, be provided by the public sector or by the private sector with public subsidies? Explain your answer. a. A swimming pool large enough to accommodate hundreds of people. b. A fireworks display. c. Vaccination against a highly contagious disease. d. Elementary education