The United States is trading salmon to Peru in exchange for anchovies. If these nations are trading based upon relative per-unit opportunity costs, what must be the case?
A The United States has comparative advantage in salmon production, and Peru has absolute advantage in anchovy production.
B The United States has comparative advantage in salmon production, and Peru has comparative advantage in anchovy production.
The United States has absolute advantage in anchovy production, and Peru has absolute advantage in salmon production.
The United States has comparative advantage in anchovy production, and Peru has comparative advantage in salmon production.
The United States has absolute advantage in salmon production, and Peru has absolute advantage in anchovy production.