What is the expected annual return $($in $\%$s$)$ over three years for the second strategy?

Information from prior:

An investor is presented with the following two alternative strategies: $(1)$ Purchase a $3-$year bond with an interest rate of $8\mathrm{.}55\%$ and hold it until maturity, or $(2)$ purchase a $1-$year bond with an interest rate of $8\mathrm{.}00\%$ and when it matures, purchase another $1-$year bond with an expected rate of $8\mathrm{.}37\%$ and when that matures, purchase another $1-$year bond with an interest rate of $9\%.$