Dixon Food's Stock Has a Beta of 1

Dixon Food's stock has a beta of 1.4,while Clark Café's stock has a beta of 0.7.Assume that the risk-free rate,r_RF,is 5.5% and the market risk premium, (r_M - r_RF) ,equals 4%.Which of the following statements is CORRECT?

A) If the market risk premium increases but the risk-free rate remains unchanged, Dixon's required return will increase because it has a beta greater than 1.0 but Clark's required return will decline because it has a beta less than 1.0.
B) Since Dixon's beta is twice that of Clark's, its required rate of return will also be twice that of Clark's.
C) If the risk-free rate increases while the market risk premium remains constant, then the required return on an average stock will increase.
D) If the market risk premium decreases but the risk-free rate remains unchanged, Dixon's required return will decrease because it has a beta greater than 1.0 and Clark's will also decrease, but by more than Dixon's because it has a beta less than 1.0.
E) If the risk-free rate increases but the market risk premium remains unchanged, the required return will increase for both stocks but the increase will be larger for Dixon since it has a higher beta.