What significant role did Rizpah play after the execution of her sons by the Gibeonites, and what does this reveal about her character?

A She cursed King David for allowing the execution, seeking revenge. B She publicly mourned her sons to incite rebellion against David's rule. C She guarded their bodies from scavenging birds and animals, demonstrating a mother's unwavering devotion and protest against injustice. D She sought refuge in a foreign land, abandoning her people and her grief.