Answer:
The theory of comparative advantage says that nations should yield and trade only those merchandises in which they have a reasonable advantage i.e. which they are specialize in.
To compute the comparative advantage of two nations A and B, let us first compute the opportunity cost of making movies and vehicles in each.
Country A:
Opportunity cost of making 1 automobile = 2 movies
Opportunity cost of making 1 movie = 1/2 automobile
Country B:
Opportunity cost of making 1 automobile = 8/5 movies
Opportunity cost of making 1 movie= 5/8 automobile
Since the prospect cost of making an automobile is lesser in Country B and the prospect cost of making movies is lesser in country A, thus Country A would make movies and country B would make automobiles.