1. Draw a graph with miles driven in a car on the horizontal axis and dollars per mile on the vertical axis. Include curves representing marginal social cost, marginal private cost, and marginal benefit (assumed to be equal for individuals and society). Label the socially optimal quantity Qs and the quanti�ty that the consumer will actually choose Qp. What externalities might driving cause? Between the solutions suggested by Pigou, Hardin, and Coase, which one is most likely to be successful in this context? Why?