need help quick!

The real risk-free rate is 3.20%, inflation is expected to be 5.80% this year, and the maturity risk premium is zero. Ignoring any cross-product terms, i.e.; if averaging is required, use the arithmetic average, what is the equilibrium rate of return on a 1-year Treasury bond? a. 3.20% b. 4.50% c. 7.40% d. 9.00% e. 3.39%