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Consider the market for gasoline in the country of Independent States. The market for gasoline in this country is currently described by the following demand and supply equations: Demand: Q = 50,000 5000? Supply: Q = 20,000? where P is the price per gallon of gasoline and Q is gallons of gasoline. Although the good citizens of Independent States are aware that consuming gasoline creates extemality costs on their society the current gasoline market does not incorporate any of these extemalities. a. Describe at least four possible externality costs associated with the consumption of gasoline. b. Given the externality costs you delineated in (a), where do you think the marginal social cost of gasoline curve is relative to the given supply curve? That is, are the two curves the same, is the marginal social cost of gasoline curve to the right of the market supply curve, or is the marginal social cost of gasoline curve to the left of the market supply curve? c. Given the above information, what is the current market equilibrium quantity and price? (1. Suppose that the government analyzes the externality costs in this market and concludes that the market should ideally result in 20,000 gallons of gasoline being consumed if all the extemalities associated with gasoline consumption were internalized in the market. Assuming the externality costs are per unit of usage of gasoline and are constant, what is the extemality cost per gallon of gasoline consumed? e. Suppose the government elects to impose a tax to internalize the extemality. How big an excise tax would the . government need to impose in order to address the externality that you measured in (d)