If the elasticity of demand for the latest American Idol album is 1.4, this means
A.a 5% increase in the price leads to a 7% decrease in quantity demanded.
B.a 10% decrease in the price leads to a 140% increase in quantity demanded.
C.a 1% increase in the price leads to a 14% decrease in quantity demanded.
D.few substitutes for the American Idol album exist.
正确答案:a 5% increase in the price leads to a 7% decrease in quantity demanded.