Bare Trees United issued $13-$year bonds at a coupon rate of $8\mathrm{.}5$ percent. The bonds make semiannual payments. If these bonds currently sell for $$986,$ what is the YTM$?$

options

$8\mathrm{.}68\%$

$8\mathrm{.}42\%$

$4\mathrm{.}34\%$

$9\mathrm{.}13\%$