Diseconomies of scale is a type of trade restriction. Thus, option A is correct.
Trade limitations are imposed by the government on global trade. The idea of competitive advantages claims that trade restrictions harm the global economy and reduce overall economic productivity.
The antithesis of scale-based economies of scale is how diseconomies from scale work. This happens when a company becomes so big that the cost of each product goes up. Given that there are reduced entrance obstacles when trade restrictions are reduced, competition is also reduced.
Therefore, option A is the correct option.
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