45 POINTS Why is an international system for currency exchange needed?

A. Countries use the same currency, so a system is needed to prevent trade barriers.
B. Countries use different currencies, so a system is needed to know the value of currency for trade.
C. Countries use different currencies, so a system is needed to establish trade barriers.
D.
Countries use the same currency, so a system is needed to pay for imports and exports.

B

Countries use different currencies, so a system is needed to know the value of currency for trade.

Explanation:

BB

The international currency exchange rate is an important determinant of the health of an economy, and is one of the most-watched and analyzed macro factors on a global scale. The rates affect global commerce, businesses that operate across borders, and individuals who are traveling or trading.

Explanation:

b. great plains

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