Which of the Following Statements Best Describes Bond Yields

Which of the following statements best describes bond yields?

A) If a coupon bond is selling at a premium, then the bond's current yield is zero.
B) If a bond is selling at a discount, the yield to call is a better measure of the expected return than the yield to maturity.
C) The current yield on Bond A exceeds the current yield on Bond B. Therefore, Bond A must have a higher yield to maturity than Bond B.
D) If a coupon bond is selling at par, its current yield equals its yield to maturity.