Beyond the immediate narrative of familial strife, what theological concept is most significantly highlighted by the story of Jacob and Esau's birthright and blessing?

A The inherent righteousness of primogeniture and its unbreakable covenant. B God's sovereign choice and the reversal of human expectations, demonstrating that divine favor is not bound by birth order or merit. C The importance of ethical business practices and the condemnation of Jacob's deceitful actions. D The superiority of a nomadic lifestyle over an agrarian one, reflected in Esau's hunting skills versus Jacob's shepherding.