After work each day, Shinichi Takada, CFA, runs a popular internet blog where he comments on micro-cap stocks. The blog includes a biography of Takada with his education and employment history. He receives no compensation for the blog. On the blog, Takada recommends purchases and sales of stocks based upon astrology. When blogging, Takada least likely violates CFA Institute Standards relating to.（）
A. fair dealing.
B. duty to employer.
C. diligence and reasonable basis.