C为什么不对？

NO.PZ2021120102000017 问题如下 active manager is consiring the senior bon of one of severalcorporate issuers. Holng other factors constant, whiof the following keyfinanciratio changes woullethe manager to expea crease in the POor thissuer? A.increase in the issuer’s coverage ratio B.increase in the issuer’s stoprivolatility C.increase in the issuer’s leverage ratio A is correct. The coverage ratio measures cash flowavailable to servibt, with a higher ratio incating a lower probability offinancistress. 老师，coverage ratio 影响的是LG，不影响POD

NO.PZ2021120102000017 问题如下 active manager is consiring the senior bon of one of severalcorporate issuers. Holng other factors constant, whiof the following keyfinanciratio changes woullethe manager to expea crease in the POor thissuer? A.increase in the issuer’s coverage ratio B.increase in the issuer’s stoprivolatility C.increase in the issuer’s leverage ratio A is correct. The coverage ratio measures cash flowavailable to servibt, with a higher ratio incating a lower probability offinancistress. 请问coverage ratio 的计算公式是什么？

NO.PZ2021120102000017问题如下 active manager is consiring the senior bon of one of severalcorporate issuers. Holng other factors constant, whiof the following keyfinanciratio changes woullethe manager to expea crease in the POor thissuer? A.increase in the issuer’s coverage ratio B.increase in the issuer’s stoprivolatility C.increase in the issuer’s leverage ratio A is correct. The coverage ratio measures cash flowavailable to servibt, with a higher ratio incating a lower probability offinancistress. B怎理解？和PO关系是？