Which one of the following is the best definition of Eurocurrency?

		Any paper money used by a country that has adopted the euro as its common currency
		Money deposited in a financial institution outside the country whose currency is involved
		Both paper and coins officially adopted under the euro system of coinage
		U.S. dollars owned by any country that has adopted the euro as its currency
		Any exchange of funds between two countries that have adopted the euro as their official currency