NASAA's Model Rule on Unethical Business Practices of Investment Advisers, Investment Adviser Representatives, and Federal Covered Advisers deems all of the following as unethical practices for investment advisers EXCEPT A) inability or unwillingness to disclose sources of additional fees received from those other than the customer in connection with providing advisory services to that client B) performing the initial trades in a new discretionary account with oral authorization C) charging advisory fees that are significantly higher than those charged by other advisers for similar services in that state D) recommending a security based on a rumor