What is the primary significance of the story of Rizpah in 2 Samuel 21:10, who guarded the bodies of her sons exposed on a hillside, beyond a simple act of maternal grief?

A It mainly illustrates the barbarity of ancient warfare and the disregard for human dignity. B It highlights Rizpah's unique status as a royal concubine and her access to special privileges. C It serves as a poignant indictment of David's political maneuvering and the injustice inflicted upon Saul's descendants, ultimately prompting David to take action and rectify the situation, thus restoring order and demonstrating justice. D It primarily demonstrates the importance of proper burial rituals in ancient Israelite culture.