单项选择题Stocks A, B, and C each have the same expected return and standard deviation. The following table shows the correlations between the returns on these stocks.Correlation of Stock ReturnsStock AStock BStock CStock A+1.0Stock B+0.9+1.0Stock C+0.1-0.4+1.0 Given the above correlations, the portfolio constructed from these stocks having the lowest risk is a portfolio :
单项选择题As part of the portfolio management process, Jill Mathews is collecting data in order to estimate the Security Market line. The slope of the Security Market Line corresponds to: