2. 外语
  3. Which statement about portfolio diversification is correct?______.

Which statement about portfolio diversification is correct?______.

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问题 Which statement about portfolio diversification is correct?______.
选项 A、Proper diversification can reduce or eliminate systematic risk.
B、As more securities are added to a portfolio, total risk typically would be expected to fall at a decreasing rate.
C、The risk-reducing benefits of diversification do not occur meaningfully until at least 30 individual securities are included in the portfolio.
D、Diversification reduces the portfolio’s expected return because it reduces a portfolio’s total risk.
答案B
解析 答案为B项。本题中除B项所述“随着越来越多的证券加入资产组合，资产组合的总体风险一般会以递减的速率下降”是正确的，其余三个选项A项、C项、D项均有误，故选B项。
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