2015年行为金融学真题Q10，C题，risk free rate是一年对么？是不是就是treasuries rate?

2013年的历年真题，为什么不存在conservatism bisa?别人建议hedge，他不hedge

没看懂题，老师帮忙讲一下这道题，不是期限越长价格却低吗

从那句话可以看出是call putoption？

老师，此题b答案，55.99这个数哪里来的啊？我觉得算的不对啊？

考的哪个知识点？没看懂什么意思

老师，您好，这题完全没看懂，您帮讲讲

请问margin interest paid 的9800如何算出的？

Mittal Tine’s investment portfolio currently consists of stocks in two companies, 40% in Drysdale Banking and the remaining amount in Clamped Oil. Performance measurement information for these two stocks is given in the table below: The covariance between the two stocks is 0.001. Tien is considering adding a third stock, Hillbillies Investors. Hillbillies Investor’s correlation coefficient with the current portfolio is 0.38. Which of the following statements is least accurate? A With Hillbillies added to the portfolio, the variance could be 0.026. B As Tien diversifies, he will reduce the portfolio's unsystematic risk. C The standard deviation of returns for the current portfolio is 15.5%. 这题答案错了吧，因该是w的平方乘以方差+w的平方乘以方差+2倍w1w2方差1方差2肉12

A，B，C分别代表什么业务，为什么是A，考的哪个知识点