No.PZ2018110601000004 (选择题)
该题答案是A:asset classes should be diversifying,但感觉B:asset classes should be mutually exclusive同样是对的,因为题干里说到Derivatives: mainly the small-cap domestic equities(derivatives里本来不应该是equity,应该是equity的衍生物,不知道为何这样表述)。这样表述后与Equity中就有部分重合,就不是mutually exclusive。不明白为什么不选B