With a Sterilized Foreign Exchange Intervention, Which of the Following

With a sterilized foreign exchange intervention, which of the following statements is true?

A) When foreign assets are sold, the central bank also sells an equal amount of government bonds to the non-bank public, resulting in no change in the monetary base.
B) When foreign assets are sold, government bonds will also be purchased by the central bank in an equal amount, resulting in no change in the monetary base.