Given a text T, and several options, according to the question posed in the text T to choose the most appropriate option from the options as the answer, please directly output the most appropriate option, do not need to output the explanation.

Which of the following statements is most likely correct about the purpose of the central bank, by continuously selling government bonds in the open market:
Option A:To implement a tight monetary policy.
Option B:To implement an expansionary monetary policy.
Option C:To decrease interest rates.

Answer: A