How does the story of Ruth and Boaz (Book of Ruth) contribute to the broader theological themes of the Old Testament beyond being a simple love story?

A It primarily serves to illustrate the dangers of intermarriage with foreign women. B It highlights God's providential care for the marginalized, demonstrating His faithfulness through unexpected blessings and the inclusion of a Moabite woman in the lineage of David and ultimately, Jesus. C It demonstrates the superiority of Israelite culture over Moabite culture. D It advocates for the complete segregation of Israelites from all other nations.