The socio-economic and resource-environment characteristics of steel industrial systems can be described by indicators in
选项：

A:Iron and steel production, iron and steel industry value added, iron ore consumption, CO2 emissions;
B:National resource consumption, product production. environmental waste discharge, domestic production;
C:Ecosystem damage, residue discharge, human health economic loss, environmental emissions;
D:Iron ore extraction, human health loss, land occupation, water consumption