The bank's internal code of conduct, a list of all gifts received by bank officers during the year, and disclosures of unauthorized gifts are all related to maintaining compliance with the Bank Bribery Act, which focuses on preventing and addressing bribery and gift-related issues. However, a list of all bank officers' outside business interests is not directly related to the specific requirements of the Bank Bribery Act, which is why it is the option that the bank does not necessarily need to retain as a written record in this context.