One Barrier to Subsequent Entries in an Industry Dominated by First

One barrier to subsequent entries in an industry dominated by first movers is

A) a laissez-faire stance toward trade adopted by first movers.
B) implementation of policies to maximize imports and minimize exports.
C) specializing in the production of goods for which firms have a comparative advantage.
D) the ability of first movers to benefit from increasing returns.
E) a decrease in the variety of goods available to consumers and increase in the cost of existing goods.