19. Your economics professor has a peach tree that hangs over a fence into his neighbor's property. The neighbor is happy about this because according to economists, this creates for Meanwhile, like are usually taxed and regulated to consumption a Positive externality; benefits; society; negative externalities loud music; eliminate b. Example of the Coase Theorem; positive externalities; everyone; harmful goods; heroin; eliminate c. Example of Say's Law; supply; people who are demanders; negative externalities; alcohol; reduce. d. Positive externality, benefits; people who did not engage in the market transaction; negative externalities; cigarette smoking; reduce e. All of the above