The difference between commodity money and fiat money is that

A、commoditymoneyisbackedbygold,andfiatmoneyisnot.;
B、commoditymoneyisbackedbyatangibleasset,andfiatmoneyhasnobacking.;
C、commoditymoneyhasnothingbehindit,whilefiatmoneyisbackedbyagovernment'sgoldreserves.;
D、commoditymoneyismadefromcommodities,andfiatmoneyismadefromItalianpaper.