问题如下：
The peaks-over-threshold approach generally requires:
选项：
A. more estimated parameters than the GEV approach and shares one parameter with the GEV.
B. fewer estimated parameters than the GEV approach and shares one parameter with the GEV.
C. more estimated parameters than the GEV approach and does not share any parameters with the GEV approach.
D. fewer estimated parameters than the GEV approach and does not share any parameters with the GEV approach.
解释：
B is correct. The POT approach generally has fewer parameters, but both POT and GEV approaches share the tail parameter ξ.
请问这道题的答案对吗？pot应该是多一个参数才对吧？
