C选项更加全面为什么不能是C呢

Note上R15.5，有一道题，问Jones现在short A stock, Jones预计下个月波动小且长期看跌，current stock price 220, to increase yield Jones would most likely to sell: 选项有(A) 240 calls, (B) 240 puts (C) 200 puts. 我能理解排除B因为是ITM put, 在A和C中我认为A更好，因为Jones预计下个月波动小且长期看跌，选A卖一个OTM call岂不是更好，因为这样既保留了short的unlimited profit potential, 还赚了期权费。请老师指点。

请问财政政策影响真实利率的逻辑是什么？谢谢

老师，请讲解一下这题，谢谢Which one of the following is most likely a reason to not use fiscal deficits as an expansionary tool?A They may crowd out private investment.B They may facilitate tax changes to reduce distortions in an economy.C They may stimulate employment when there is substantial unemployment in an economy.

老师，请问讲解一下这题，谢谢Fiscal expansions will most likely have the most impact on aggregate output when the economy is in which of the following states?A Full employmentB Near full employmentC Considerable unemployment

CFO直接法支付给供应商的钱是不是还需要考虑预付账款

这题用不到exchange ratio么？

老师 我有个疑惑，记住了公式但是还是算不出题目，像这道题中，我知道分子有一项是market securities，但是题目当中给出是financial assets的时候，我就不知道这两项其实是一个意思 ，这种情况有什么技巧吗？谢谢

LM曲线，r和物价水平不是反向关系吗？

verifiability和understandability的侧重点在哪里呀？感觉做题做不对。能否请老师列一些英文关键词呢？