According to which theory one country may be more efficient in producing a particular goods than another country and that another country may be capable of producing some other goods more efficiently than the first one?

A. Importing B. Exporting C. Franchising D. Joint Ventur

A. optimal B. loss C. better D. none of these

A. Micro level B. Macro level C. Both A and B D. Neither A nor B

A. Chief controller of Imports and Exports B. Director General of Foreign Trade C. Director General of Commercial Intelligence D. Chief Controller of Foreign Trade