ABC corp. has $1000 par value bonds with 10 years remaining until maturity. They are callable in 4 years at $1,080. The stated coupon on the bonds is 8% and they have a 10% yield to maturity. If the bonds pay interest semi-annually, what is the yield to call for these bonds? Will the corporation call the bond?

31b. The yield to call is the interest rate on a bond assuming the bond is call when?