When Wes Smith first joined Advisors, Inc. , he was excited that all the analysts at the firm had the CFA designation. In letters to prospective clients, he states that this ensures that Advisors can provide better service than their competitors. With respect to Standard Ⅶ (B) , Reference to CFA Institute, the CFA Designation, and the CFA Program, this is:（）
A. a violation because he mentions the CFA designation in the letter.
B. a violation for both mentioning the CFA designation and saying the firm can guarantee better service.
C. a violation because he cannot guarantee better service.