Answer the question on the basis of the following production possibilities tables for two countries, North Cantina and South Cantina.

North Cantina Production PossibilitiesABCDEFCapital Goods543210Consumer Goods01018242830

South CantinaProduction PossibilitiesABCDEFCapital Goods543210Consumer Goods0815212527

Refer to the tables. If North Cantina is producing at production alternative D, the opportunity cost of the twenty-fifth unit of consumer goods will be