What Is Meant by a ?Xed Exchange Rate Regime

What is meant by a ?xed exchange rate regime?

A) The government sets an exchange rate and then uses the central bank to maintain the value of the
Currency at that rate .
B) The exchange rate is set by the market forces of supply and demand.
C) The government claims that the exchange rate ?oats, but it is in fact managed by the central bank
D) The government uses the central bank to maintain the exchange rate within a wide band