Which of the following is
not an example of Pareto optimality?
◦ Timmy tricks Jonathan into trading a genuine Brooks Robinson baseball card for a fake Pete Rose baseball card.
◦ The Beauregard twins eagerly switch cell phone cases with each other.
◦ Despite complaints from members, Harmony Industries builds a sewage treatment plant next to a country club.
◦ The city council approves a tax increase on all residents in order to make repairs to one remote residential street.
