Kenny Enterprises has just issued a bond with a par.value of $$1,000,$ a maturity of twenty years, and an $8\%$ coupon rate with semiannual payments. What is the cost of debt for Kenny Enterprises if the $5$ond sells at $$1,080?$

$7\mathrm{.}99\%$

$6\mathrm{.}54\%$

$6\mathrm{.}69\%$

$7\mathrm{.}24\%$

$6\mathrm{.}84\%$