In book 23 of homer's iliad are these words: "the winner was to acquire a fire-straddling tripod valued at twelve oxen by the akhaians. as for the loser, in their midst akhilleus placed a woman versatile at crafts, whose value was four oxen." what does this passage tell us about economics in the iliad?
a. oxen were used as the unit of account.
b. oxen were used as the medium of exchange.
c. oxen were the best way to store wealth.
d. oxen were used as legal tender.