which compares the gases released by fertilizers and gases from landfills?

a chemicals from fertilizers can release carbon dioxide, while landfills release methane
b chemicals from fertilizers can release methane, while landfills release carbon dioxide
c chemicals from fertilizers can release methane, while landfills release nitrous oxide
d chemicals from fertilizers can release nitrous oxide, while landfills release methane

a chemicals from fertilizers can release carbon dioxide, while landfills release methane