The Diagram Below Shows the Demand and Supply Curves for Refrigerators

The diagram below shows the demand and supply curves for refrigerators in Canada.
FIGURE 34- 1
-According to the principle of "national treatment" in the North American Free Trade Agreement (NAFTA) ,member countries

A) must submit any new laws being considered to a cross- border judicial panel before the laws are enacted.
B) have complete autonomy over their own laws and the way in which they are applied to any firm,domestic or foreign,operating on their soil.
C) can establish specific subsidies to favour their own national firms over international firms,as long as it applies only to domestic operations.
D) can establish new laws as they wish,as long as these laws apply equally to domestic and foreign- owned firms.
E) cannot establish new laws which harm the domestic environment.