Consider the following statements with reference to different levels of economic integration:
1. In a Customs Union (CU), there is a free flow of labour and capital among member countries.
2. In a Common Market (CM), member countries abolish barriers to trade and service among them and as a whole maintain a common external tariff.
3. In an Economic and Monetary Union (EMU), the monetary and fiscal policies are harmonized among member countries.
Which of the statements given above are correct?