What might be the symbolic significance of the 'valley of dry bones' vision in Ezekiel 37, considering the historical context of the Israelite exile in Babylon?

A It is a literal prophecy about the physical resurrection of deceased individuals. B It represents the seemingly hopeless and spiritually dead state of the exiled Israelites, with the vision offering hope for national restoration and spiritual renewal. C It symbolizes the inevitable decay and destruction of all earthly kingdoms. D It serves as a warning against idolatry and the worship of false gods.