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

Multiple Choice

The following figure shows the demand curve, D, and supply curve, S, of ballpoint pens in Lithasia. The world price of pens is $2.

-Refer to the figure above.Which of the following statements is true?

A) Buyers in Lithasia lost when the country engaged in free trade.
B) Sellers in Lithasia gained when the country engaged in free trade.
C) The nation gained as a whole by opening up to free trade.
D) The nation lost as a whole by opening up to free trade.