请解释A和B选项

NO.PZ2021120102000015 问题如下 Whiof the followingstatements about cret spremeasures is most accurate? A.The is the yielspreover the MRR establisheupon issuanceto compensate investors for assuming issuer’s cret risk. B.The Z- will above the if the MRR is expecteto remain constant over time. C.The yielsprefor a corporate bonwill equto the G-spreif the government benchmark yielcurve is flat. Cis correct.Theyielspreis the simple fferenbetween a bons all-in YTM ana current on-the-run governmentbonof similmaturity, while the G-spreisinterpolation of government benchmark yiel. If the government bonyielurve is flat, these two measures will equone another. 这道题A哪里错了

NO.PZ2021120102000015 问题如下 Whiof the followingstatements about cret spremeasures is most accurate? A.The is the yielspreover the MRR establisheupon issuanceto compensate investors for assuming issuer’s cret risk. B.The Z- will above the if the MRR is expecteto remain constant over time. C.The yielsprefor a corporate bonwill equto the G-spreif the government benchmark yielcurve is flat. Cis correct.Theyielspreis the simple fferenbetween a bons all-in YTM ana current on-the-run governmentbonof similmaturity, while the G-spreisinterpolation of government benchmark yiel. If the government bonyielurve is flat, these two measures will equone another. BThe Z- will above the if the MRR is expecteto remain constant over time. 如果MRR是MRR is expecteto remain constant over time. Z- 应该是below ，因为这里的constant不代表flat吧

NO.PZ2021120102000015 问题如下 Whiof the followingstatements about cret spremeasures is most accurate? A.The is the yielspreover the MRR establisheupon issuanceto compensate investors for assuming issuer’s cret risk. B.The Z- will above the if the MRR is expecteto remain constant over time. C.The yielsprefor a corporate bonwill equto the G-spreif the government benchmark yielcurve is flat. Cis correct.Theyielspreis the simple fferenbetween a bons all-in YTM ana current on-the-run governmentbonof similmaturity, while the G-spreisinterpolation of government benchmark yiel. If the government bonyielurve is flat, these two measures will equone another. The Z- will above the same the if the MRR is expecteto remain constant over time.这样对吗

NO.PZ2021120102000015问题如下 Whiof the followingstatements about cret spremeasures is most accurate? A.The is the yielspreover the MRR establisheupon issuanceto compensate investors for assuming issuer’s cret risk.B.The Z- will above the if the MRR is expecteto remain constant over time.C.The yielsprefor a corporate bonwill equto the G-spreif the government benchmark yielcurve is flat. Cis correct.Theyielspreis the simple fferenbetween a bons all-in YTM ana current on-the-run governmentbonof similmaturity, while the G-spreisinterpolation of government benchmark yiel. If the government bonyielurve is flat, these two measures will equone another. 不明白C为什么是对的