What theological implication can be derived from the story of Mephibosheth, the disabled son of Jonathan, being shown kindness by King David long after Jonathan's death?

A It demonstrates the importance of physical strength and ability in leadership roles. B It highlights the futility of earthly promises and the impermanence of political alliances. C It illustrates the concept of grace and covenant faithfulness, extending mercy beyond merit and circumstance. D It serves as a warning against trusting in human relationships rather than divine providence.