under nasaa's model rule on unethical business practices of investment advisers, investment adviser representatives, and federal covered advisers, which of the following statements regarding the distribution of reports prepared by 3rd parties that are not affiliated with the adviser is true? a) an adviser is required to disclose any source of information used in making recommendations to clients. b) an adviser need not disclose the author of any outside 3rd-party report unless the client asks. c) an adviser is prohibited from basing recommendations on work that is wholly the product of someone else's efforts. d) an adviser may use a report prepared by someone else if the source of the report is disclosed.