How can the concept of comparative advantage explain the differences in cost-minimizing combinations of inputs between two countries?

• A. Countries will avoid using the input that is cheaper for them.
• B. Countries will use the same combination of inputs regardless of cost differences.
• C. Comparative advantage does not affect cost-minimizing combinations.
• D. Countries will specialize in the input that is relatively cheaper for them, leading to different cost-minimizing combinations.

Answer: (D)