Beyond the act of obedience, what primary theological concept does the story of Abraham's willingness to sacrifice Isaac (Genesis 22) illustrate about God's character?

A God's arbitrary power and demand for unquestioning obedience. B God's ultimate provision and aversion to human sacrifice, foreshadowing the sacrifice of Jesus. C God's desire to test human faith to the breaking point. D God's preference for the descendants of Abraham over all other nations.