The Garland Corporation has a bond outstanding with a $$80$ annual interest with semiannual payment, a market price of $$800,$ and a maturity date in $5$ years. Assume the par value of the bonds is $$1,000.$ Find the following: $($Use a Financial calculator to arrive at the answers. Round the final answers to $2$ decimal places.$)$ a$.$ The coupon rate $($nominal yield$).\%$ b$.$ The current yield. $\%$ c$.$ The yield to maturity. $\%$ d$.$ The yield an investor would realize if coupon payments were reinvested at $10$ percent $($holding period return$).\%$