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.What is the total surplus before Lithasia opens up to free trade?
A) $10
B) $20
C) $30
D) $40
Correct Answer:

Verified
Correct Answer:
Verified
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