问题如下图：
选项：
A. 
B. 
C. 
解释：
你好，我理解在经济不好的时候，央行会出台一些刺激的政策，短期利率会下降，所以会呈现upward，此题的b选项是upward吗？还是可以downward？
steepen. become inverte B is correct. ring a recession, short rates are often lower because centrbanks tento lower their polirate in these times because the output gis likely to negative. However, the impaof sumonetary polion longer-term rates will not strong, so long rates mnot fall mushort rates. The centrbank will usually expecteto bring short term rates bato normthe recession reces anthe risk free rates will increase economic growth recovers. Thus, the slope of the yielcurve will typically steepen ring a recession. 考点yielcurve 解析关键词ring a recession，在经济衰退期，yielcurve是变陡峭的，因为央行会降息，降息对短期利率的影响更大，导致yielcurve steepen. 另一个结论是inverteyielcurve is a prector of recession。注意区分。 题目说的是 slope（收益率曲线的斜率）变陡峭，解析是yielcurve 变陡峭，这俩不是一回事儿吧？
老师两个疑问 一是RING RECESSION，是STEEPEN不一定是UPWAR吗？我听何老师上课讲的好像是UPWAR 二是BONYIELCURVE是不是不是SCOUNTERETURN.何老师讲经济不好的时候，大家都去买短期债券避险，导致短期债券价格上升，RETURN上升。所以这里不是SCOUNTERETURN下降是吗？两个概念搅在一起了。
请问这道题为什么不选inverte呢？recession不是会变反向吗？
请问 steepen = upwar？invert = wnwar
