In the Parable of the Sheep and the Goats (Matthew 25:31-46), what theological concept does the separation of the sheep and goats primarily illustrate?

A The distinction between Jews and Gentiles in God's plan of salvation. B The importance of adherence to strict religious laws and rituals. C The final judgment based on acts of compassion and service to others. D The predestined salvation of some and the damnation of others.