Suppose you read an article about the Golden Gate Bridge and Highway District bonds. It includes the following information: What is the maturity date of this bond? If the coupon interest rate is 4.375% for the first six months and changes to a rate equal to the 10-year Treasury bond rate plus 1.3% thereafter, the bond is called a bond. Which feature of a bond contract allows the issuer to redeem bonds under specified terms prior to maturity? Convertible provision Sinking fund provision Call provision Put provision When are issuers more likely to call an outstanding bond issue? When interest rates are lower than they were when the bonds were issued When interest rates are higher than they were when the bonds were issued