As the expansion phase of the business cycle advances from early stage to late stage, businesses most likely experience a decrease in: A labor costs. B capital investment. C availability of qualified workers. 答案是C但感觉选B，latestage 不应该是降低投资吗？

Based on typical labor utilization patterns across the business cycle, productivity (output per hours worked) is most likely to be highest: A at the peak of a boom. B into a maturing expansion C at the bottom of a recession. 这道题能否解释一下，为何不是A？

The characteristic business cycle patterns of trough, expansion, peak, and contraction are:A periodic.B recurrent.C of similar duration. 为何不选periodic，也是周期性的意思？

下面那个公式是怎么得出的呢？讲义哪里有写呢？

这里C01为什么是-100不是-111.4呢

这个表没看懂

为什么support层 extension 和contraction都吸收

AccruedRevenue是asset还是revenue啊？

老师，option1和2的FV为什么是0呀？还有option3的PV是怎么按计算器出来的？

continuously compounding不应该是最大的吗？