Its production possibilities would thus be only 600 tons of cotton lint or 2,400 tons of wheat. While the production possibilities change for Country A, the opportunity costs of production remain the same. Producing one ton of cotton requires Country A to forego producing 4 tons of wheat, just as producing one ton of wheat requires Country A to forego producing 0.25 tons of cotton (Table 2). Given this information, Country A retains its comparative advantage in cotton production, while Country B retains its comparative advantage in wheat production.