问题如下图：
选项：
A. 
B. 
C. 
解释：
downside risk 具体讲的什么来着？我咋没找到
NO.PZ2015121801000002问题如下 Whiof the following is the best reason for investor to concernewith the composition of a portfolio? A.Risk rection.B.wnsi risk protection.C.Avoinof investment sasters.is correct.Combining assets into a portfolio shoulrethe portfolio’s volatility. The portfolio approaes not necessarily provi wnsi protection or guarantee ththe portfolio always will avoilosses.我感觉B甚至更有道理呢，我们要分散的其实是价格下跌的风险。是哪里理解错了吗？
NO.PZ2015121801000002 问题如下 Whiof the following is the best reason for investor to concernewith the composition of a portfolio? A.Risk rection. B.wnsi risk protection. C.Avoinof investment sasters. is correct.Combining assets into a portfolio shoulrethe portfolio’s volatility. The portfolio approaes not necessarily provi wnsi protection or guarantee ththe portfolio always will avoilosses. B中下行风险保护包含哪些？
NO.PZ2015121801000002 老师好，感觉C也是正确的
NO.PZ2015121801000002 老师，应该怎么理解risk rection和risk versification的区别呢？
wnsi risk protection. Avoinof investment sasters. A is correct. Combining assets into a portfolio shoulrethe portfolio’s volatility. The portfolio approaes not necessarily provi wnsi protection or guarantee ththe portfolio always will avoilosses.不太明白这道题的意思在考什么呢
