2010mock的一道题：

A security market with price continuity is most accurately characterized as a market in which:

A. assets can be bought or sold quickly with minimal transaction costs.
B. prices change rapidly from one transaction to the next in response to new information.
C. prices do not change much from one transaction to the next in the absence of new information.

答案选C，请问A、B错在哪里呢？谢谢