A CFA charterholder agreed in writing with his former employer not to solicit former clients for a period of one year after his termination. After he left his former employer, he consulted with a lawyer about whether the agreement was legally enforceable. The lawyer advised that it was doubtful that the agreement could be enforced, so the charterholder sent marketing brochures about his new firm to his former clients. According to the Standards of Practice Handbook, which of the following statements is most accurate with respect to the charterholder’s conduct（）
A. The Standards do not apply to the charterholder’s conduct.
B. The Standards require the charterholder to comply with the agreement with his former employer.
C. Because the charterholder relied upon the opinion of legal counsel, he did not violate the Standards.