问题
单项选择题
A fourth market transaction occurs when:（）
A. a security is purchased by a dealer and then immediately resold.
B. exchange-listed shares are traded in the OTC market.
C. a buyer and seller complete a trade without the assistance of an intermediary broker.
答案
参考答案：C
解析：
The fourth market has evolved primarily through institutions as a way to reduce their transaction costs. Modern telecommunications technology has been making the direct search methodology a reasonable alternative.