A bond with 5 years remaining until maturity is currently trading for 101 per 100 of par value. The bond offers a 6% coupon rate with interest paid semiannually. The bond is first callable in 3 years for a call price of $102, and is callable after that at end of year 4 for a call price of $101. The bond's annual yield-to-maturity is closest to:

a. 2.88%.b. 5.77%.c. 5.94%.d. 2.51%e. 2.91%