Beyond the immediate act of obedience, what primary theological concept does God illustrate through His command to Abraham to sacrifice Isaac in Genesis 22?

A The arbitrary nature of divine commands and the importance of unquestioning obedience. B The foreshadowing of God's ultimate sacrifice of His own son, Jesus Christ, for the redemption of humanity. C The superiority of spiritual worship over material sacrifices in religious practice. D The emphasis on the importance of familial piety and the continuation of the covenant through Isaac's descendants.