Bonds issued by Glorious Vending Corporation have a coupon rate of $11\mathrm{.}86$ percent and a face value of $$1,000\mathrm{.}00,$ pay semi$-$annual coupons with one just paid and the next coupon due in $6$ months, and mature in $10$ years from today. Six months ago, the bonds were priced at $$837\mathrm{.}44.$ Today, the bond's yield$-$to$-$maturity $($YTM$)$ is $15\mathrm{.}91$ percent. What was the rate of return for the bonds over the past $6$ months $($from $6$ months ago until today$)?$

$9\mathrm{.}75\%($plus or minus $2bps)$

$10\mathrm{.}12\%($plus or minus $2bps)$

$2\mathrm{.}67\%($plus or minus $2bps)$

$26\mathrm{.}49\%($plus or minus $2bps)$

none of the answers are within $2bps$ of the correct answer