In the context of the early church, what was the primary theological significance of the Jerusalem Council's decision (Acts 15) regarding Gentile converts and the Mosaic Law?

A It demonstrated the complete abandonment of Jewish traditions by the early Christians. B It highlighted the importance of maintaining strict adherence to all aspects of the Mosaic Law for salvation. C It affirmed that salvation is by grace through faith in Jesus Christ, not by works of the law, while promoting unity between Jewish and Gentile believers. D It established a separate set of rules and regulations for Gentile believers, distinct from those of Jewish believers.