问题如下：
The price of a stock at t = 0 is $208.25 and at t = 1 is $186.75. The continuously compounded rate of return for the stock from t = 0 to t = 1 is closest to:
选项：
A.–10.90%.
B.–10.32%.
C.11.51%.
解释：
A is correct.
The continuously compounded return from t = 0 to t = 1 is r0,1 = ln(S1/S0) = ln (186.75/208.25) = –0.10897 = –10.90%.
请问下在计算器里面这个怎么按？先按Ln出现的是error 2， 如果先按186.75/208.25再按Ln出来的结果是5.338。麻烦老师告知按计算器步骤
