suppose you purchase a $10-$year bond with $6\mathrm{.}78\%$ annual coupons. You hold the bond for $4$ years, and sell it immediately after receiving the fourth coupon. If the bonds yield to maturity was $5\mathrm{.}31\%$ when you purchased and sold the bond.

what cash flows will you pay and receive from your investment in the bond per $$100$ face value?

What is the annual rate of return of your investment?