About Ecological Footprint, which of the following statements is incorrect? ( )

A、It is a a measure of humans’ demands of natural resources.
B、People from a rich country can leave more Ecological Footprints than people from a poor country.
C、Compared with conventional economics, it is an approach that does the reverse because it doesn’t see the environment as a subset of the economy.
D、It pays attention to humanity’s ecological impact.