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 factors would best justify a decision to avoid investing in a country’s sovereign debt?
Option A:Freely floating currency
Option B:A population that is not growing
Option C:Suitable checks and balances in policymaking

Answer: B