The correct answer is D. marginal revenue curve.
A kinked demand curve is a type of demand curve that is characterized by a sudden change in slope at a certain point. This type of demand curve is often seen in oligopolistic markets, where there are a small number of firms competing with each other.
The kinked demand curve is reflected in a discontinuity in the marginal revenue curve. This is because, at the point where the demand curve kinks, the marginal revenue curve is also discontinuous. This discontinuity occurs because, at the kink, the firms in the oligopoly are all charging the same price. As a result, if one firm were to lower its price, it would not be able to increase its sales significantly, as the other firms would simply match its price reduction. However, if one firm were to raise its price, it would lose a significant amount of sales, as the other firms would
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