How does the Parable of the Persistent Widow (Luke 18:1-8) challenge common assumptions about the nature of God's justice and the role of prayer?

A It suggests that God is reluctant to answer prayers and must be worn down by repeated requests. B It emphasizes the importance of social status and influence in obtaining justice from God. C It highlights the contrast between a corrupt human judge and a perfectly just God, encouraging unwavering faith even when answers are delayed. D It implies that persistent prayer is only necessary for those who lack faith in God's immediate intervention.