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) if the supply of tangerines decreased, then the supply of oranges also must decrease.
C) buyers must have expected a higher price for oranges and thus increased their demand for oranges.
D) consumers consider the two goods complements, and so sellers decreased the supply of oranges.
E) consumers consider the two goods substitutes, and demand for oranges increases.
E
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Arthur Bach is worth $780 million dollars. He goes into an upscale men's store and buys 32 green sweaters, each costing $200 . If Arthur has maximized his utility from this purchase, what is the marginal utility of the thirty-third green sweater?
a. cannot tell b. greater than $200 c. less than $200 d. 0 e. $200
European communism collapsed during the years
A. 1974-1976. B. 1979-1981. C. 1984-1986. D. 1989-1991.