How does the story of Hagar in Genesis 16 and 21 challenge or expand the traditional understanding of God's covenantal relationship primarily associated with Abraham?

A It demonstrates that God's promises are exclusively reserved for those within the direct lineage of Abraham through Sarah. B It reveals God's compassion and provision for those who are marginalized and vulnerable, even outside the primary covenant line, suggesting a broader scope of divine care. C It serves as a warning against the dangers of polygamy and its negative impact on family dynamics. D It justifies the enslavement of people from different ethnic backgrounds based on divine decree.