Which of the Following Statements Is FALSE

Which of the following statements is FALSE?

A) To understand how call provisions affect the price of a bond, we first need to consider when an issuer will exercise its right to call the bond.
B) If the call provision offers a cheaper way to retire the bonds, the issuer will forgo the option of purchasing the bonds in the open market and call the bonds instead.
C) When bond yields have increased, by exercising the call on the callable bond and then immediately refinancing, the issuer can lower its borrowing costs.
D) An issuer can always retire one of its bonds early by repurchasing the bond in the open market.