Alan Johnson, CFA, is a portfolio manager with an investment firm based in New York. One of his firm's clients told Johnson that she would compensate him beyond that provided by his firm, based on the capital appreciation of the portfolio each year. Johnson should a. inform his employer, customers, and clients if he accepts the compensation arrangement. b. receive permission from CFA Institute for the compensation arrangement. c. turn down the additional compensation because it would create undue pressure on him to achieve strong short-term performance results d. turn down the additional compensation because it will result in conflicts with the interests of the other client accounts.