You paid $$1,344\mathrm{.}76$ for a $25-$year bond with a coupon rate of $9\mathrm{.}75\%.$ What would be your annual return rate if you hold the bond until maturity?

$7\mathrm{.}0\%$

$7\mathrm{.}1\%$

$6\mathrm{.}6\%$

$6\mathrm{.}9\%$

$6\mathrm{.}5\%$