多项选择题

下列有关两项资产收益率之间的相关系数说法中，正确的有（ ）。

A.当相关系数为1时，投资两项资产不能抵消任何投资风险
B.当相关系数为-1时，投资两项资产可以最大程度地抵消风险
C.当相关系数为0时，投资两项资产的组合可以降低风险
D.两项资产之间的正相关程度越低，其投资组合可分散的投资风险的效果越小
E.当相关系数为1时，投资两项资产的组合可以降低风险
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