问题
单项选择题
The Value Line index is an equally weighted geometric average of the return of about 1700 firms. What is the value of an index based on the geometric average returns of three stocks, where the returns on the three stocks during a given period were 20% , -10%, and 5% 9（）
A. 4.3%.
B. 5.0%.
C. 11.7%.
答案
参考答案：A
解析：
This is a geometric mean question.
(1.2×0.9×1.05)1/3-1=0.043=4.3%