Which of the Following Statements Is Most Correct

Multiple Choice

Which of the following statements is most correct?

A) We would observe a downward shift in the required returns of all stocks if investors believed that there would be deflation in the economy.
B) If investors became more risk averse, then the new security market line would have a steeper slope.
C) If the beta of a company doubles, then the required rate of return will also double.
D) Both statements a and b are correct.
E) All of the statements above are correct.