91. Hydro Systems has bonds outstanding with a face value of $1,000, 13 years to maturity, and a coupon rate of 6.5 percent, paid annually. What is the company's pretax cost of debt if the bonds currently sell for $1,056?

• .42 percent

• 4.71 percent

• 5.87 percent

• 5.55 percent

• 5.36 percen