In the Figure Given Below,D₁ and S₁ Are the Private

question 81

Multiple Choice

In the figure given below,D₁ and S₁ are the private demand and supply curves,of a commodity produced by a competitive firm.S₂ reflects the social marginal cost of production,while S₀ represents the external marginal cost.
-In Figure 20-1,the marginal external cost at the equilibrium output level is:

• A)$0.
• B)$40.
• C)$10.
• D)$28.

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