Suppose the domestic supply (QS) and demand (QD) for MP3 players in the United States is represented by the following set of equations:QS = -25 + 10PQD = 875 - 5PIn the absence of trade with the rest of the world, the consumer surplus in the United States MP3 player market is
A. $33,062.50.
B. $30,062.50.
C. $19,500.00.
D. $22,562.50.
Answer: A
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