Currently, Bruner Inc.$\text{'}$s bonds sell for $$1,250.$ They pay a $$120$

annual coupon, have a $15-$year maturity, and a $$1,000$ par value, but

they can be called in $5$ years at $$1,070.$ Assume that no costs other

than the call premium would be incurred to call and refund the

bonds, and also assume that the yield curve is horizontal, with

rates expected to remain at current levels on into the future. What

is the difference between this bond's YTM and its YTC$?($Subtract

the YTC from the YTM$.)$a$.1\mathrm{.}75\%$b$.1\mathrm{.}81\%$c$.1\mathrm{.}99\%$d$.2\mathrm{.}12\%$