Answer:
The correct answer is letter "A": New York, London, and Tokyo.
Step-by-step explanation:
New York City is still considered the world center for foreign exchange (forex) trading only followed by London and Tokyo. The main currencies being traded are the U.S. dollar (USD), Euro (EUR) and the Japanese yen (JPY). Some analysts believe soon the Chinese renminbi (CNY) will take an important place among the previously mentioned three currencies.