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 p 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.
参考答案：C
解析：
CFA会员不能说明或者暗示其有能力获得与过去相类似的业绩，否则违反了CFA协会的业绩披露行为标准。另外，Sekar在与客户及潜在客户沟通时没有区分事实和观点，对于复杂的统计分析，会员必须清楚地区分事实和统计结果，并且要确认已知的分析的限制，同时Sekar没有告诉客户其选择证券的基本流程与方法，所以也违反了与客户及潜在客户沟通的行为标准。