In 2012 a severe drought raised the price of corn. For a farmer in Canada who harvested a normal crop because the farm was not affected directly by the drought, the increase in the price of corn (2012年,严重干旱使玉米价格上涨。对于加拿大的农民,由于农场直接受干旱影响,因此收割了正常的作物,玉米价格上涨——中文由在线翻译而来,仅供参考)
A.
increases the farmer's producer surplus.增加农民生产者剩余。
B.
decreases the farmer's producer surplus.减少农民生产者剩余。
C.
does not affect the producer surplus because this change is a movement along the farmer's supply curve and not a shift of the farmer's supply curve.不影响生产者剩余,因为这种变化是沿着农民供给曲线的运动,而不是农民供应曲线的转变。
D.
increases producer surplus only if the farmer's supply is completely inelastic.只有农民的供给完全没有弹性,才能增加生产者的剩余。