Match the following.
| List-I (Levels of Integration) | List-II (Features) |
| a. Customs union | 1. It allows for the free mobility of capital and labour across countries |
| b. Common market | 2. Its example is NAFTA |
| c. Free trade area | 3. It occurs when a group of countries agree to eliminate a set of common external tariffs on imports |
A. a-3, b-2, c-1
B. a-3, b-1, c-2
C. a-2, b-3, c-1
D. a-1, b-2, c-3
Answer: Option B

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