单选题 An analyst does research about market efficiency. Which of the following statements does not support the weak form efficient market hypothesis? Investors can earn abnormal profits by :
A. using fundamental analysis to purchase the securities.
B. using no public information to purchase the securities.
C. using technical analysis strategies to purchase the securities.

【正确答案】 C

【答案解析】[解析] 弱式有效市场表明现在股价已经完全反映了市场上能得到的如价格、成交量等技术面的信息。如果弱式有效市场成立，投资者则无法从技术分析中获得超额利润。如果半强式有效市场成立，投资者则无法从技术分析和基本面分析中获得超额利润。如果强式有效市场成立，投资者则无法从技术分析、基本面分析和内幕信息中获得超额利润。