NO.PZ2023061903000005
问题如下：
Q. Which one of the following trends in various economic indicators is most consistent with a recovery from a recession?
选项：
A.A declining inventory–sales ratio and stable industrial production index
B.A rising broad stock market index and unit labor costs turning from increasing to decreasing
C.A decrease in average weekly initial claims for unemployment insurance and an increase in aggregate real personal income
解释：
C is correct. The improving leading indicator, average weekly initial claims for unemployment insurance, and the improving coincident indicator, aggregate real personal income, are most consistent with an economic recovery. Even though a declining inventory-to-sales ratio, a lagging indicator, is consistent with an early recovery, the coincident indicator, the stable industrial production index, does not support that conclusion. Although a rising stock market index can signal economic expansion, the lagging indicator, the unit labor costs, has peaked, which is more consistent with a recession.
对这个指标lagging的理解，在哪个阶段有peak cost 最大？在经济复苏阶段，我理解会增加单位用工效率，而非马上招募员工，cost会有降低，所以想问问B选项后半句怎么判断是描述不对？
