According to the Apostle Paul's writings, particularly in Romans and Galatians, what is the primary purpose of the Law, considering its relationship to sin and justification?

A To provide a comprehensive guide for moral living and social order. B To ultimately save humanity from the curse of sin through meticulous observance. C To reveal the exceeding sinfulness of sin and lead people to Christ. D To establish a covenant between God and Israel that remains perpetually binding.