For trade to take place, a country must face a world relative price that is O A. less than the relative price that would prevail in the absence of trade. O B. the same as the relative price that would prevail in the absence of trade. O C. different from the relative price that would prevail in the absence of trade. O D. more than the relative price that would prevail in the absence of trade.Trade benefits O A. all factors in the economy. O B. the factor that is specific to the export sector of each country. O C. the factor that is specific to the import - competing sectors. O D. mobile factors