B. 1 Consider the use of tolled highways . When the number of cars using the highway exceeds a certain level , there will be traffic congestion such

B. 1Consider the use of tolled highways . When the number of cars using the highway exceedsa certain level , there will be traffic congestion such that drivers are creating negativeconsumption externalities . Suppose a government official proposes to increase the toll toa level that can eliminate congestion .Discuss how the negative consumption externalities arise . In particular , who create ('s ) theexternalities and who suffer from them ?"19Draw a diagram to represent the above situation . In your diagram , indicate the unregulatedmarket quantity and socially efficient quantity . Is there over- congestion in the unregulatedmarket ?"What is the outcome under the proposal of the government official ? Explain whether youagree with this proposal .[ Hint : (1) Externalities may not start from the very first unit . ( 2 ) Eliminating congestionmeans to remove it totally . ]