An analyst does research about efficient frontier curve. As an investor continues to assume more risk and moves upward on the efficient frontier, the slope of the efficient frontier curve:
A. increase and incremental return per unit of risk decrease.
B. decrease and incremental return per unit of risk increases.
C. decrease and incremental return per unit of risk decrease.
参考答案:C
解析: 有效前沿线(efficient frontier curve)代表最优的风险性资产组合,在同样的收益情况下具有最低的风险,当不断增加风险时,有效前沿的斜率不断降低,代表增加单位风险所要求增加的回报减少。