Suppose the substitution effect of a good is positive, and income effect of the goods is negative. The income effect outweighs its substitution effect. The good is a:
　　A. Veblen good
　　B. Giffen good
　　C. Non-satiation good
　　Solution：B
　　Giffen goods & Veblen goods: 吉芬商品的替代效应为正，收入效应为负，总效应为负；Veblen商品用替代效应和收入效应没有办法去解释Non-satiation good：non-satiation是越多越喜欢，这种商品是一般的商品，就是价格越低，消费量越高。