Rizpah's vigil (2 Samuel 21:10) over the bodies of her sons, who were executed to atone for Saul's actions against the Gibeonites, primarily demonstrates what?

A Her unwavering loyalty to King David, despite his role in the execution. B The common practice of public execution and the acceptance of collective punishment in ancient Israel. C The profound grief and maternal love, highlighting the devastating consequences of political actions on ordinary people. D Her challenge to the religious authorities, questioning the justice of sacrificing innocent lives for past transgressions.