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

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.Which of the following explains the impact on the domestic buyers and sellers when the country opens to free trade?

A) Both the domestic sellers and buyers are made worse off.
B) Both the domestic sellers and buyers gain.
C) The domestic sellers lose, but the domestic buyers gain.
D) The domestic sellers gain, but the domestic buyers lose.