step by step please on how to solve and please include formula . i dont need A. just B and C

10. Suppose you purchase a 30-year, zero-coupon bond with a yield to maturity of 6%. You hold the bond for five years before selling it. a. If the bond's yield to maturity is 6% when you sell it, what is the annualized rate of return of your investment? (Answer: 6%) b. If the bond's yield to maturity is 7% when you sell it, what is the annualized rate of return of your investment? (Answer: 1.13%) c. If the bond's yield to maturity is 5% when you sell it, what is the annualized rate of return of your investment? (Answer: 11.15%) d. Even if a bond has no chance of default, is your investment risk free if you plan to sell it before it matures? Explain