A small island nation produces only boxes of macaroni and cheese, most of which it sells in the export market. The world price per box is $10, regardless of the quantity exported. The nation has three macaroni and cheese factories, each of which varies in efficiency, but it's impossible for the government to determine each factory's marginal costs. To profit the most as a country, what should this nation's government do? Order each factory to produce the same quantity Shut down the two most inefficient factories, and produce at the most efficient one until marginal cost is $10 O Let the producers compete in the market to determine the optimal quantity and allocation of macaroni and cheese production. Impose a tax on exports and see which factory survives the longest