【单选题】You notice that the price of orange juice at your local grocery store has increased. Which of the following statements is not a possible explanation for the rise in the price of orange juice?
A.
Frosty weather destroys oranges causing the price of oranges to increase.
B.
As a result of an increase in income, consumers wish to purchase more orange juice at every price level.
C.
A recent scientific study is reported in the press that suggests that apple juice may be contaminated with pesticides.
D.
Due to the bioengineering of orange trees, the domestic supply of oranges increases.
【单选题】Alison is a traveling salesperson who drives many miles each day to visit her clients. She gets utility from the purchase of gasoline, but she doesn't care which brand of gasoline she consumes. Suppos...