Orange Juice Producers Sell a Lower Quantity of Orange Juice

Multiple Choice

Orange juice producers sell a lower quantity of orange juice even with a higher market price. Which of the following events would have this effect?

A) An increase in the cost of fertiliser used for orange orchards.
B) A decrease in the price of orange juice processing.
C) A decrease in income, assuming orange juice is a normal good.
D) A decrease in the population.