Figure 9-5 The Figure Illustrates the Market for Tricycles in a Country

Figure 9-5
The figure illustrates the market for tricycles in a country.
-Refer to Figure 9-5.The increase in total surplus resulting from trade is

A) $640,since consumer surplus increases by $1,760 and producer surplus falls by $1,120.
B) $1,280,since consumer surplus increases by $3,520 and producer surplus falls by $2,240.
C) $2,240,since consumer surplus increases by $3,240 and producer surplus falls by $1,000.
D) $2,560,since consumer surplus increases by $7,040 and producer surplus falls by $4,480.