Does Free Trade Improve the Living Standards of All Residents

Does free trade improve the living standards of all residents of a country?

A) Yes,because inefficient import- competing industries are replaced with efficient export industries.
B) Yes,definitely,because the gains from trade outweigh the losses in the import- competing industries.
C) Probably not - in principle,the net gains from trade could be divided such that every individual is better off,but in practice,some individuals are likely to be worse off.
D) No,because the losses in the import- competing industries outweigh the gains from trade in the new export industries.
E) No,because the benefits from free trade are only theoretical.