[单选]Which of the following events would increase producer surplus?
A. Sellers' costs stay the same and the price of the good increases.
B. Sellers' costs increase and the price of the good stays the same.
C. Sellers' costs increase and the price of the good decreases.
D. All of the above are correct.
查看答案
[单选]Total surplus is equal to
A. value to buyers - profit to sellers.
B. value to buyers - cost to sellers.
C. consumer surplus x producer surplus.
D. (consumer surplus + producer surplus) x equilibrium quantity.
[单选]We can say that the allocation of resources is efficient if
A. producer surplus is maximized.
B. consumer surplus is maximized.
C. total surplus is maximized.
D. sellers’ costs are minimized.
[判断]所有买家都受益于限制性的价格上限。
A. 对
B. 错
[判断]在限制性的价格上限下发展起来的配给机制通常是低效的。
A. 对
B. 错
微信支付 
支付宝支付