Keenan Industries has a bond outstanding with 15 years to maturity, a 7.95% nominal coupon, semiannual payments, and a $1,000 par value. The bond has a 6.10% nominal yield to maturity, but it can be called in 4 years at a price of $1,055. What is the bond's nominal yield to call? Do not round your intermediate calculations. a. 2.14% b. 3.24% C. 4.43% d. 1.49% e. 4.28%