(Figure: Market for Enplanements) From the year 2000 to 2001, the demand curve for air travel shifted inward, from D2000 to D2001. In 2000, the equilibrium price and quantity were

(Figure: Market for Enplanements) From the year 2000 to 2001, the demand curve for air travel shifted inward, from D2000 to D2001. In 2000, the equilibrium price and quantity were $122.22 and 148.9 million enplanements, respectively. In 2001, the equilibrium price and quantity fell to $104.82 and 123.6 million enplanements, respectively. The loss in producer surplus attributable to the decrease in demand is equal to area:
A) A.
B) A + B.
C) B + C.
D) B.

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