【单选题】Which of the following is true about producer surplus?
A.
Producer surplus is how much more it costs sellers than they are paid.
B.
Producer surplus is shown graphically as the area under the demand curve but above the supply curve.
C.
An increase in the market price due to an increase in demand will increase producer surplus.
D.
All of the above are true about producer surplus.
【单选题】Total surplus with a tax is equal to
A.
consumer surplus plus producer surplus.
B.
consumer surplus minus producer surplus.
C.
consumer surplus plus producer surplus minus tax revenue.
D.
consumer surplus plus producer surplus plus tax revenue.
【单选题】If the price rises from P1 to P2, consumer surplus decreases by the area:
【判断题】马克思主义作出了巨大贡献,所以当代大学生应该努力学习,以科学认真的态度,一追求真理的精神追求马克思主义。