NO.PZ2023040701000031
问题如下：
During economic expansions, monetary authorities raise benchmark rates to help control inflation. This action is most often consistent with:
选项：
A.bearish flattening
bullish steepening
bearish steepening
解释：
Correct Answer: A
This action is most often consistent with bearish flattening, or short-term bond yields rising more than long-term bond yields resulting in a flatter yield curve.
老师，我记得课堂上讲过r上升，bearish flattening的情况下，债券P会上涨，这个结论对吗？P上涨是什么原因呢？
