担心r下降，对冲用long还是short?

老师 请帮忙解释一下296题呗 谢谢

老师，为什么otm的put option的wrong way risk最大？

我记得老师讲的是相关性对EL没有影响，只对UL影响。最后一句话，a fifth varible......我是哪里记得不对吗？

老师你好，麻烦帮忙解释下这道题

Bonds issued by XYZ Corp. are currently callable at par value and trade close to par. The bonds mature in 8 years and have a coupon of 8%. The yield on the XYZ bonds is 175 basis points over 8-year US Treasury securities, and the Treasury spot yield curve has a normal, rising shape. If the yield on bonds comparable to XYZ bond decreases sharply, the XYZ bonds will most likely exhibit: A. Negative convexity B. Increasing modified duration C. Increasing effective duration D. Positive convexity

192题，regulatory capital是监管要求的最低资本，跟银行CDO什么的没有关系吧，我觉得CDO应该是降低银行的经济资本占用吧？还有C选项agency cost指的是什么？

习题册91题，PD是显著下降，相关系数是上升，那么senior tranche的价值不应该受PD影响更大所以上升吗？

百题第38题，这题答案感觉是错的，怎么能forecast减actual呢，疑惑

麻烦老师解释一下C选项为什么错，谢谢！