单选题 An analyst does research about capital asset pricing model. Which of the following statements is most accurate? The security market line (SML):
A. is a graphical representation of the capital asset pricing model that plots expected retum versus beta for any security.
B. includes all possible combinations of the risk-free asset and any risky portfolio.
C. includes all possible combinations of the risk-free asset and the market portfolio.

【正确答案】 A

【答案解析】[解析] 证券市场线(SML)是资本资产定价模型(CAPM)的图形表示，系统性风险用beta表示，该模型通过计算证券的必要收益率，进而进行证券选择。选项B是资本配置线(CAL)的定义，即不同的风险性资产与无风险性资产的组合。选项C是资本市场线(CML)的定义，即不同的市场组合与无风险性资产的组合。