问题如下：
Alex, an analyst of brokerage firm. When making a new recommendation, he called the institutional clients in the morning and called the individual clients in the afternoon. Which of the following statements is most likely correct?
选项：
A.He did not violate the standard.
B.He violated the Standard on Misconduct.
C.He violated the Standard on Fair Dealing.
解释：
C is correct.
According to Standard III(B) Fair Dealing, Alex should not discriminate against any clients. He should inform all his clients at the same time.
请问，如果投资经理的客户很多的话，投资经理是否可以先给机构类的VIP客户打电话，然后再给个人投资者打电话。因为电话通知的话，总是有个先后顺序。这样的行为，是否违反准则。如果违反的话，哪种程度的对客户差异化服务行为，是不违反准则的？
