题目内容：
Inancienttimeswealthwasmeasuredandexchangedinthingsthatcouldbetouched:food,tools,andpreciousmetalsandstones.Thenthebartersystemwasreplacedbycoins,whichstillhadrealvaluesincetheywerepiecesofraremetal.Coinswerefollowedbyfiatmoney,papernotesthathavevalueonlybecauseeveryoneagreestoacceptthem.Todayelectronicmonetarysystemsaregraduallybeingintroducedthatwilltransformmoneyintoevenlesstangibleforms,reducingittoaseriesof“bitsandbytes”,orunitsofcomputerizedinformation,goingbetweenmachinesatthespeedoflight.Already,electronicfundtransferallowsmoneytobeinstantlysentandreceivedbydifferentbanks,companies,andcountriesthroughcomputersandtelecommunicationsdevices.
Whichofthefollowingwouldbethemostappropriatetitleforthepassage?
A.InternationalBankingPolicies
B.TheHistoryofMonetaryExchange
C.TheDevelopmentofPaperCurrencies
D.CurrentProblemsintheEconomy
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