Suppose a country has two airlines. One is a small domestic airline that uses modern airplanes with lower CO2 emissions, and the other is a large international airline that uses older jumbo jets carrying hundreds of people at one time. A carbon emissions tax on airlines would be more efficient than a strict limit (command and control) on the total amount of carbon emissions each airline can produce. Two reasons that support this statement are: a. A carbon emissions tax would a.allow the larger airline to continue using its less efficient airplanes b.not allow the large airline to continue using its less efficient airplanes b. A command-and-control policy would likely a.allow the larger airline to continue its service. b.force the larger airline to curb its service