Which statement is asserted by the theory of absolute advantage?

a. A country will have a comparative advantage if it makes products that rely on global supply networks.

b. Most trade in manufactured goods should be between countries with similar per capita incomes.

c. A country should export those goods for which it is more productive than other countries and trade for those goods for which other countries are more productive.

d. A country should import goods from developing economies in order to maximize returns on profit and economies of scale.