The Following Figure Shows the Demand Curve, D, and the Supply

Multiple Choice

The following figure shows the demand curve, D, and the supply curve, S, for calculators in Barylia. The world price of calculators is $40.

-Refer to the figure above.What is the domestic production of calculators in Barylia once the economy opens up to free trade?

A) 10 units
B) 30 units
C) 60 units
D) 100 units