问题
单项选择题
Which of the following statements about efficient markets and indexes is FALSE（）
A. An unweighted index assumes that investors make and maintain an equal dollar investment in each stock in the index.
B. External efficiency means prices adjust rapidly to new information.
C. Efficient markets tests have found that stocks with high price-to-earnings ratios (P/E) tend to outperform stocks with low P/E ratios.
答案
参考答案：C
解析：
Tests show that low P/E ratio stocks outperform high P/E ratio stocks.