which of the following is most likely to be correct

A We can estimate a companys pretax cost of debt based on the current yield of the companys outstanding bonds

B For a floater, change in the benchmark interest rate will change the coupon rate of the bond but not its yield to maturity

C Two bonds have the same coupon rate, face value and time to maturity. One can be traded at a premium while the other traded at a discount

D EAY effective annual yield of a bond should always be greater than the YTM of the bond

E The observed yield to maturity in the market for the companys corporate bond can be directly used as the after tax cost of debt