In general, what is the relationship between a country’s ecological footprint and its overall standard of living? A. As the standard of living increases, so does the ecological footprint. B. As the standard of living decreases, the ecological footprint increases. C. It depends on country―in developed countries, the ecological footprint and standard of living are positively correlated; in developing countries, they are negatively correlated. D. It depends on the country―in developing countries, the ecological footprint and standard of living are positively correlated; in developed countries, they are negatively correlated. E. None of the other answer options is corre