请老师解释一下b选项

问题如下：

Question Which of the following statements with respect to Giffen and Veblen goods is least accurate?

选项：

A.Giffen goods are “inferior,” whereas Veblen goods are “high-status” goods.

B.The highly negative income effect overpowers the substitution effect for both types of goods.

C.Both types of goods demonstrate the possibility of a positively sloping demand curve.

解释：

B is correct. The overwhelming nature of the highly negative income effect over the substitution effect is applicable to Giffen goods only. Veblen goods are highly valued, high-priced “status” goods; consumers may tend to buy more of a Veblen good if its price rises.

A is incorrect. It is true that Giffen goods are “inferior” whereas Veblen goods are “high-status” goods.

C is incorrect. It is true that both Giffen goods and Veblen goods demonstrate the possibility of a positively sloping demand curve.

中文解析：

B正确。高度负的收入效应压倒替代效应的压倒性性质只适用于吉芬商品。凡勃伦商品是价值很高、价格很高的“身份”商品;如果凡勃伦产品的价格上涨，消费者可能倾向于购买更多的产品。

A不正确。吉芬商品是“劣等”商品，而凡勃伦商品是“高级”商品，这是事实。

C是不正确的。的确，吉芬商品和凡勃伦商品都证明了需求曲线斜率为正的可能性。