| 1. Primary articles |
| 2. Fuel, power, light and lubricants |
| 3. Manufactured products |
| 4. Food articles and industrial raw materials |
A) 1, 2 and 3
B) 2, 3 and 4
C) 1, 3 and 4
D) 1 and 3
Correct Answer: A
Solution :
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