Scenario: the Following Figure Shows the Demand Curve, D, and the Supply

Multiple Choice

Scenario: The following figure shows the demand curve, D, and the supply curve, S, of chairs in Barylia. Barylia is open to free trade. The world price of chairs is $3, and the government of Barylia decides to impose a $1 tariff on the import of chairs.

-Refer to the scenario above.How many chairs does Barylia import when the government imposes a tariff of $1 per unit?

A) 10 units
B) 20 units
C) 30 units
D) 40 units