under which of the following arrangement is consumer surplus extracted by the seller ?
A. a country club requires members to pay annual membership fees before
they can dine there.
[A 都幾obvious 因為membership fees係extract cs 既1個典型既方法]
B. A shoes seller requires customers who buy a pair of shoes to also buy one
pair of socks
C. A private university requires student applicants to pay application fees
[C, application fees 有幾其他用途例如用黎cover administration 既cost ]
D.A restaurant offering a set menu alongside a choice of separate dishes.
可以解釋下b 同d 嗎 ?
唔該 ..