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: 吉芬商品的替代效應為正，收入效應為負，總效應為負；Veblen商品用替代效應和收入效應沒有辦法去解釋Non-satiation good：non-satiation是越多越喜歡，這種商品是一般的商品，就是價格越低，消費量越高。