Under NASA record keeping rules for investment advisers, any advertisement, circular or other communication: it is circulated to 2 or more people, and must be kept for a minimum of 5 years.
NASA is an agency of the U.S. federal government. NASA conducts space researches and do developments in the field of space and aeronautics.
Thus, the correct option is i) must be retained if it is circulated to 2 or more persons.
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