Does migration impact a​ country's comparative​ advantage?
A. Migration does not impact comparative advantage since it is explicitly omitted from the Ricardian and Heckscher-Ohlin trade models.
B. If most of the migration is to non-tradable sectors like domestic labor, migration will likely foster the development of new export goods.
C. It may if the additional labor changes the relative abundance of labor in an export sector.
D. The addition of any new resource, even in the form of immigrant labor, always changes a country's comparative advantage.