单选题 If the price elasticity of demand for a good is 4.0, then a 10 percent increase in price would result in a: A. 4% decrease in the quantity demanded. B. 10% decrease in the quantity demanded. C. 40% percent decrease in the quantity demanded.

【正确答案】 C

【答案解析】Price elasticity of demand =(% change in Q demanded/% change in price). Given the price elasticity of demand and the percentage change in price, we can solve for the percentage change in Q demanded.