graph. A tax is imposed in the market for cigarettes that shifts the supply curve from S, to S,. What area corresponds to the revenue collected by the government from the tax? O A. the dark gray area O B. the light gray area O C. an area not shown on this graph O D. the sum of the dark gray and light gray areas A tax is efficient if it imposes a large excess burden relative to the tax revenue it raises. O A. True O B. False