Opening Trade Between a Nation That Has "Cheap Labor" and One

Opening trade between a nation that has "cheap labor" and one that has "expensive labor" will

A) lower the standard of living in both countries.
B) raise the standard of living in both countries.
C) raise the standard of living in the "expensive labor" country and lower the standard of living in the "cheap labor" country.
D) raise the standard of living in the "cheap labor" country and lower the standard of living in the "expensive labor" country.