In the book of Revelation, what is the theological significance of the 'new Jerusalem' descending from heaven, and how does it relate to the Old Testament concept of Zion?

A The new Jerusalem is a literal city built on earth to replace the current earthly Jerusalem, signifying a return to a physical kingdom. B The new Jerusalem represents the ultimate and eternal dwelling place of God with humanity, fulfilling the prophetic hope of a renewed Zion and a restored relationship. C The new Jerusalem is a symbolic representation of the Roman Empire after its conversion to Christianity, signifying its dominance and power. D The new Jerusalem is a metaphorical representation of the early church, signifying its growth and expansion throughout the world.