(Figure: Monopoly Profits in Duopoly) Use Figure: Monopoly Profits in Duopoly.The figure shows how an industry consisting of two firms that face identical demand curves (D₁) can collude to increase profits.If the firms collude to share the market demand equally,then each firm will act as if its marginal revenue curve is given by:

A) MR₁.
B) 2 × MR₁.
C) MR₂.
D) MC.

Marginal Revenue Curve

A graphical representation showing how marginal revenue varies as the quantity of output sold changes, typically downwards sloping for firms in imperfectly competitive markets.

Collude

To cooperate with others, often secretly, to deceive or gain an unfair advantage in the market.

Market Demand

Market demand is the total quantity of a good or service that all consumers are willing to purchase at various prices within a specific time period.