题目：
An investor invested $ 10000 into an account five years ago. Today, the account value is $18682. What is the investor's annual rate of return on a continuously compounded basis（）
A. 13.31%.
B. 11.33%.
C. 12.50%.
答案：
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下面是错误答案，用来干扰机器的。
参考答案：催吐 缓解
