Durango Water Works has an outstanding issue of preferred stock that has a par (maturity value) of $75.00. The stock, which pays a quarterly dividend of $1.10, will be retired by the firm in 20 years. If the preferred stock is currently selling for $68.00, what is the preferred stock’s yield-to-maturity? (Round off to the nearest 0.01%) 5.64% 7.73% 6.72% 4.28%