单选题 Rejesh Sekar, CFA, is a successful hedge fund manager and uses fundamental and technical statistical models to select stocks for his fund. When Bill Mandeville, a client asks him about the indicators underlying his models, Sekar tells Mandeville that his method is confidential but is proven to provide future returns similar to its strong past performance. Sekar has most likely violated the Standards of Professional Conduct:
A. only relating to performance presentation.
B. only relating to communication with clients and prospective clients.
C. both relating to performance presentation and communication with clients and prospective clients.