单选题 Assume a good becomes illegal to buy or sell, and the expected penalty for selling the good is greater than that for buying the good. Relative to when the good was legal:
  • A. price and quantity will rise.
  • B. price and quantity will decline.
  • C. price will rise and quantity will decline.
【正确答案】 C
【答案解析】[解析] 如图所示，如果对生产非法商品的罚金高于对购买此类商品的罚金，即商品供给曲线的左移幅度高于需求曲线的左移幅度，则非法商品的均衡价格P1将高于同类合法商品的均衡价格P0，而非法商品的均衡产量Q1将低于同类合法商品的均衡价格Q0。
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