To achieve gains from specialization: a. country A should export rubber bands to country B and import country B’s paper clips. b. country A should export paper clips to country B and import country B’s rubber bands. c. country A should produce both rubber bands and paper clips and not trade with country B. d. country B should produce both rubber bands and paper clips and not trade with country A. 28. The ratio at which nations will exchange goods and services is known as the: a. quota. b. terms of trade. c. balance of trade. d. foreign exchange rate.