【单选题】Alex is willing to buy the last ticket to the Billy Bragg concert for $15, while Jake is willing to pay $25. Alex is first in line and buys a ticket for $15. He then resells his ticket to Jake for $20...
A.
. the sum of the consumer and producer surplus to increase.
B.
. the sum of the consumer and producer surplus to decrease.
C.
. a deadweight loss of $5.
D.
. consumer surplus to decrease and producer surplus to increase.
【简答题】Dialogue : Beautiful Packing John: Glad to see you again, Sherman. Sherman: Hi, glad to see you too. John: Please, sit down.Would you like to try our new tea? Sherman: Great! The main purpose of my vi...