问题如下图：
选项：
A. 
B. 
C. 
D. 
解释：
如何判断mean-reversion parameter是大是小？short-lived就大，long-lived就小吗？为什么？
The Bureof Labor Statistihjust reporteunexpecteshort-term increase in high-priceluxury automobiles. Whis the most likely anticipateimpaon a mean-reverting mol of interest rates? The economic information is long-livewith a low mean-reversion parameter. The economic information is short-livewith a low mean-reversion parameter. The economic information is long-livewith a high mean-reversion parameter. The economic information is short-livewith a high mean-reversion parameter. is correct. The economic news is most likely short-term in nature. Therefore, the mereversion parameter is high so the mereversion austment per periowill relatively large. whis long liveor short live........no ia all
The economic information is short-livewith a low mean-reversion parameter. The economic information is long-livewith a high mean-reversion parameter. The economic information is short-livewith a high mean-reversion parameter. is correct. The economic news is most likely short-term in nature. Therefore, the mereversion parameter is high so the mereversion austment per periowill relatively large. 题目说这个原本价格就很高的产品突然价格又增加了，这并不能说明这个商品回到了均值回归的水平，反而离均值更远了，所以是low mereversion，因为是low meanreversion所以均值回归花的时间要长，long lived
题干里是price，问题是利率，这个地方不明白。另外一点是题目说high-prieluxury automoboiles，那均值水平不是应该高嘛，为什么不是low merevertion parameter呢？ high mereverreversion parameter不会下降到低于均值的水平吗？
请老师帮忙解读答案
