The income elasticity of demand for a product is high. This means that:
　　A. Sales will increase sharply if the price is reduced;
　　B. Sales will fall only slightly when incomes of households fall;
　　C. Sales will rise sharplywhen incomes of households fall;
　　D. The good is inferior good
　　【答案】C. The income elasticity of demand measures the responsiveness of demand to changes in consumers’incomes. An‘inferiror’good has a negative income elasticity: as incomes fall, more is bought.

 
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