Who Are the Losers When Canada Institutes Trade Restrictions

Who are the losers when Canada institutes trade restrictions?  

A)  Canadian consumers of imported goods, Canadian producers who use imported intermediate goods, and, if other countries retaliate, Canadian exporters 
B)  only Canadian producers of goods who compete with imported goods 
C)  Canadian consumers of imported goods and Canadian producers of goods that compete with imported goods 
D)  all Canadian producers of all goods and Canadian exporters