问题如下图：
选项：
A. 
B. 
C. 
请问A为什么不对 题目说了 equity和derivatives的相关性是0.95 所以违反diversifying 因此为啥不选A？？
解释：
NO.PZ2018110601000003问题如下 Richar a junior financianalyst, lists the following asset class specifications. Equity: US equities annon-US equities bt: US investment-gra corporate bon anreestate rivatives: mainly the small-cmestic equities As you are Richars supervisor, you notithe correlation on asset class returns on equity anrivatives is 0.95, while the asset class returns on have a very low correlation with equity anrivative returns. The asset class specifications for are inappropriate because: asset classes shoulversifying asset classes shoulmutually exclusive asset within asset class shoulrelatively homogeneous. C is correct. 考点：asset class的分类原则 解析：在bt这个资产类型内部，包含了美国投资级别债券和房地产，但是这两种产品的性质是不相同的，违反了homogeneous这个分类原则。 单看b，equity和rivative包含的都是equity呀，这不是违反了mutuexclusive吗？
NO.PZ2018110601000003 asset classes shoulmutually exclusive asset within asset class shoulrelatively homogeneous. C is correct. 考点asset class的分类原则 解析在bt这个资产类型内部，包含了美国投资级别债券和房地产，但是这两种产品的性质是不相同的，违反了homogeneous这个分类原则。 这个correlation 说的是asset class相互之间的对吧？比如equity和bt之间
问一道题：NO.PZ2018110601000003
请问在固定收益类里包括了房地产，是不是违反互斥性原则？谢谢
