Assume a 10-year Treasury bond has a coupon rate of 3.9%. a. Give examples of required rates of return that would make the bond sell at a discount, at a premium, and at par b. If this bond's par value is $5,000, calculate the differing values for this bond given the required rates you choose in part a. a. At what rate would the bond sell at a discount? (Select the best answer below) OA. 2.7% OB. 3.9% OC. 6.7%