How does the apostle Paul's use of the 'Armor of God' metaphor in Ephesians 6:10-18 reflect the socio-political realities faced by early Christians living under Roman rule?

A It primarily emphasizes individual spiritual discipline, detaching from external circumstances. B It draws parallels between the spiritual battle against evil and the physical battles fought by Roman soldiers, subtly critiquing Roman power. C It encourages Christians to actively resist Roman authorities through armed rebellion. D It promotes assimilation into Roman culture by adopting Roman military values.