单选题 The semi-strong form of the efficient market hypothesis (EMH) asserts that stock prices:

A. fully reflect all historical price information.
B. fully reflect all relevant information including insider information.
C. fully reflect all publicly available information.

【正确答案】 C

【答案解析】The semi-strong form of the EMH asserts that security prices fully reflect all publicly available information. This would include all historical information. The weak form relates to historical information only. The strong form relates to public and private information.