问题如下图：
选项：
A. 
B. 
C. 
D. 
解释：
1、求real-world PD的时候，为何要减去credit premium? liquidity premium是其他Rp这个是很清楚的，但这章都是信用风险啊，为何credit premium也是其他Rp?
2、为何不能采用老师课上的求π与π'的公式来算，前面有考友问过，但回答挺模糊的，看不明白。感谢！
NO.PZ2016082405000067 B The risk-neutrfault probability is approximately 8% because the market priis 92% of par. risk-neutrprobability = real-worlprobability + cret risk premium + liquity premium 8% = real-worlprobability + 2% + 1% real-worlprobability = 8% - 3% = 5% 可以具体下The risk-neutrfault probability is approximately 8% because the market priis 92% of par.么？ 如果按照讲义上的风险中性p计算方法如下，计算出来是5.7%，请问这个方式有什么问题么？ p=100(1-p/1+risk_free_rate 92=100*(1-p/1+0.025
NO.PZ2016082405000067 8% 5% 6% 8% 5% 6% B The risk-neutrfault probability is approximately 8% because the market priis 92% of par. risk-neutrprobability = real-worlprobability + cret risk premium + liquity premium 8% = real-worlprobability + 2% + 1% real-worlprobability = 8% - 3% = 5% 真实pπ这个规律可以直接使用吗
NO.PZ2016082405000067 B The risk-neutrfault probability is approximately 8% because the market priis 92% of par. risk-neutrprobability = real-worlprobability + cret risk premium + liquity premium 8% = real-worlprobability + 2% + 1% real-worlprobability = 8% - 3% = 5% 这里的real-worlP我理解用中性减掉LRP，但是为什么要减去CRP？CRP不是应该包括在真实世界P面吗？
B The risk-neutrfault probability is approximately 8% because the market priis 92% of par. risk-neutrprobability = real-worlprobability + cret risk premium + liquity premium 8% = real-worlprobability + 2% + 1% real-worlprobability = 8% - 3% = 5% 这个inflation rate只是一个干扰项吧？
B The risk-neutrfault probability is approximately 8% because the market priis 92% of par. risk-neutrprobability = real-worlprobability + cret risk premium + liquity premium 8% = real-worlprobability + 2% + 1% real-worlprobability = 8% - 3% = 5% 我的只能理解，中性定价里面，所有的sprea对CR进行补偿，这个时候CR大了，所以P，如果是objective的话， sprea止对CR进行补偿，还有别的东西，所以，P对就低了。就是扫一眼知道选B ， 还是不太明白你放的那个图，和这句话是怎么补偿的。讲道理RISK NATURP 1+3+2=6%,这个东西应该是sprea概念 如果套用这题，sprea 8%-2.5%=5.5%，如果是risk natur的话5.5%全部补偿CR了，再减去1%的流动性4.5%就是objective 但是这么硬算又找不到答案。。。
