题目内容

下列关于系统性风险的说法中，错误的有（）。

A. 系统性风险也称为可分散风险
B. 系统性风险影响到资本市场上的部分证券
C. 系统性风险可以通过投资多元化的组合而加以避免
D. 系统性风险是指由于外部经济环境因素变化引起整个资本市场不确定性加强，从而对所有证券都产生影响的共同性风险

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