If a Country's Currency Is "Pegged" to Another Currency,this Means

If a country's currency is "pegged" to another currency,this means

A) the currency's value is determined by the supply and demand for that currency in a free currency market.
B) the World Trade Organization sets the exchange rate and enforces it with trade sanctions.
C) workers in that country use the other nation's currency in daily transactions.
D) the government of that country is managing the exchange rate so that it stays the same.