Beyond the immediate deliverance of the Israelites, what theological significance can be attributed to God's hardening of Pharaoh's heart, as described in the book of Exodus?

A It demonstrates God's capricious nature and lack of concern for human free will. B It primarily serves as a narrative device to prolong the story and showcase God's power through multiple plagues. C It highlights God's sovereignty over all, including rulers, and His use of even resistant individuals to accomplish His divine purposes and reveal His glory. D It signifies God's inability to persuade Pharaoh through reason and compassion, resorting to coercion as a last resort.