Bandon Manufacturing intends to issue callable, perpetual bonds with annual coupon payments and a par value of $$1,000.$The bonds are callable at $$1,260.$One $-$year interest rates are $9$ percent.There is a $60$ percent probability that long$-$term interest rates one year from today will be $10$ percent, and a $40$ percent probability that they will be $8$ percent.Assume that if interest rates fall the bonds will be called.What coupon rate should the bonds have in order to sell at par value?