问题如下：
An analyst observes the following annual rates of return for a hedge fund:
The hedge fund’s annual geometric mean return is closest to:
选项：
A. 0.52%.
B. 1.02%.
C. 2.67%.
解释：
A is correct.
[(1 + 0.22)(1-0.25)(1 + 0.11)]1/3 -1 = 0.0052 = 0.52%
可以这样算吗？（1+0.22）*（1-0.25）*（1+0.11）=（1+R）^3 计算器怎样可以算出R？
