please explain

Which of the following statement is CORRECT? If a coupon bond is selling at par, its current yield equals its yield to maturity If a coupon bond is selling at a discount, its price will continue to decline until it reaches its par value at maturity If interest rates increase, the price of a 10-year coupon bond will decline by greater percentage than the price of a 10-year sero coupon bond If a bond's yield to maturity exceeds its annual coupon, then the bond will trade at a premium If a coupon bond is selling at a premium, its current yield equals its yield to maturity