Which of the Following Statements Is Correct

Multiple Choice

Which of the following statements is correct?

A) A portfolio with a large number of randomly selected stocks would have more market risk than a single stock that has a beta of 0.5, assuming that the stock's beta was correctly calculated and is stable.
B) If a stock has a negative beta, its expected return must be negative.
C) A portfolio with a large number of randomly selected stocks would have less market risk than a single stock that has a beta of 0.5.
D) According to the CAPM, stocks with higher standard deviations of returns must also have higher expected returns.