Which of the following is/are correct about bonds? There may be one or multiple correct answers; choose all of them. All coupon bonds pay semi-annual coupons. The face value of a zero-coupon bond changes with its yield to maturity. Under normal conditions (positive interest rates), zero-coupon bonds should trade at a discount to lower than) their face value. The price of a zero-coupon bond should gradually approach its face value as the bond approaches the end of its term, all else the same