The Aztec in Central America used cacao beans, from which chocolate is made, as money. Prices varied from a few beans for a piece of fruit to several thousand for an enslaved person. Aztec merchants had to take care when selling expensive items. Payment usually came stored in sacks, and the sacks might contain counterfeit money—bean husks filled with mud.

Based on the passage, what type of money did the Aztec use?

representative money
fiat money
legal tender
commodity money