Suppose the real risk-free rate is 4.20%, the average expected future inflation rate is 4.40%, and a maturity risk premium is MRP = 0.043%(t-1), where t is the number of years to maturity. What rate of return would you expect on a 4-year Treasury security?

Group of answer choices

9.00%

8.46%

7.65%

9.72%

8.73%