Jason Blackwell, CFA, works as an investment manager for Mega Capital, a large multinational brokerage firm. He resides in a country whose applicable law is stricter than the Code and Standards but does business with clients in a country whose applicable law is less strict than the Code and Standards. Blackwell decides to follow the Code and Standards for clients in the less strict country. While Blackwell is still employed at Mega, Lego Associates verbally asks Blackwell to review client portfolios during evenings and weekends for a fee. Blackwell gets consent from his immediate supervisor at Mega to undertake this independent activity for a one - month trial basis. Which of the following statements about Blackwell’s actions involving Standard Ⅰ, Professionalism, and Standard IV(A), Loyalty is most accurate Blackwell:（）

A. did not violate either Standard Ⅰ or Standard Ⅳ (A).

B. violated both Standard Ⅰ and Standard Ⅳ (A).

C. violated Standard Ⅰ but did not violate Standard Ⅳ (A).

两个用户在营业厅内不知何故，突然争吵并打斗起来，作为营业班长的你该如何处理？