HR Corporation has a beta of 2.0, while LR Corporation's beta is 0.5. The risk-free rate is 10%, and the required rate of return on an average stock is 15%. Now the expected rate of inflation built into rRF falls by 3 percentage points, the real risk-free rate remains constant, the required return on the market falls to 11%, and the betas remain constant. When all of these changes are made, what will be the difference in required returns on HR's and LR's stocks?

a. 2.5%

b. 1.0%

c. 4.5%

d. 6.0%

e. 5.4%