A is a restrictive provision in a bond indenture, providing for the systematic retirement of the bonds prior to their maturity. A(n) gives purchasers inflation protection Choose... Choose... Nomrmal yield Sinking fund re extendible not Conversion fed inverted yield a tina A is a restrictive provision in a bond indenture, providing for the systematic retirement of the bonds prior to their maturity. A(n) gives purchasers inflation protection Choose... Choose... Nomrmal yield Sinking fund re extendible not Conversion fed inverted yield a tina