Q1. David Ricardo illustrated the comparative cost theory in 1817 by using a
- (1) Two country, two commodity model
दो देश, दो वस्तु मॉडल - (2) Two country, one commodity model
दो देश, एक वस्तु मॉडल - (3) Three country, two commodity model
तीन देश, दो वस्तु मॉडल - (4) None of the above
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