The responsiveness of the quantity demanded of one good to a change in the price of a different good is measured by the:

The responsiveness of the quantity demanded of one good to a change in the price of a different good is measured by the:
A.price elasticity of demand.
B.price elasticity of supply.
C.cross-price elasticity of demand.
D.income elasticity of demand.
正确答案：cross-price elasticity of demand.