All Else Held Constant, Which of the Following Will Increase

All else held constant, which of the following will increase the expected return on a security based on CAPM? Assume the market return exceeds the risk-free rate and both values are positive. Also assume the beta exceeds 1.0.
I. decrease in the security beta
II. increase in the market risk premium
III. decrease in the risk-free rate
IV. increase in the market rate of return

A) I and III only
B) II and IV only
C) I, II, and IV only
D) II, III, and IV only
E) I, II, III, and IV