If the Price of Tangerines Increases, the Price of Oranges

Multiple Choice

If the price of tangerines increases, the price of oranges also rises because

A) buyers' incomes must have decreased and oranges are an inferior good.
B) consumers consider the two goods complements and so sellers decrease the supply of oranges.
C) if the supply of tangerines decreases, then the supply of oranges also must decrease.
D) consumers consider the two goods substitutes and demand for oranges increases.
E) buyers must have expected a higher price for oranges and thus increased their demand for oranges.