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 action is a central bank least likely to take if it wants to encourage businesses and households to borrow for investment and consumption purposes?
Option A:Sell long-dated government securities.
Option B:Purchase long-dated government treasuries.
Option C:Purchase mortgage bonds or other securities.

Answer: A