Answer:
O B. The conversion of money from one system to another system
Step-by-step explanation:
Currency exchange is converting the currency of a country into the currency of another country. It is the conversion of the country's A currency to the country's B currency. The rate of converting the currency of one country to another is the exchange rate.
Currency exchange takes place in the foreign currency exchange market. Demand and supply factors determine the exchange rate between currencies of two countries.