The Pauper Labor and the Exploitation Arguments

The pauper labor and the exploitation arguments

A) are theoretical weaknesses that limit the applicability of the Ricardian concept of comparative advantage.
B) are theoretically irrelevant to the Ricardian model, and do not limit its logical relevance.
C) are not relevant because the Ricardian model is based on the labor theory of value.
D) are not relevant because the Ricardian model allows for different technologies in different countries.
E) invalidate the Ricardian model.