In the long run, if new fringe firms with same cost structures as existing fringe firms enter the oligopoly market:
a. the dominant firm's ability to extract profit from the market decreases.
b. the fringe's ability to extract profit from the market decreases.
c. the fringe supply curve rotates leftward and downward.
d. the dominant firm's residual demand curve rotates rightward.
A
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Write an essay on the economic relationship of greatest concern for development between education and
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