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.

实寒证与虚寒证最主要的区别点是（）

A.病程的长短

B.病势的缓急

C.肢体痛与不痛

D.怕冷与否

E.脉之有力无力