If the cross-price elasticity of demand for two goods is negative, these two good are ()
A. Luxury goods.
B. Necessities.
C. Substitutes.
D. Complements.
参考答案:D
If the cross-price elasticity of demand for two goods is negative, these two good are ()
A. Luxury goods.
B. Necessities.
C. Substitutes.
D. Complements.
参考答案:D