问题如下：
Sunny Raison, the director of the research department, recently found one of his subordinates, Tony, had some violations on the report-writing. Then Sunny wrote an email to warn Tony to stop violations right now and reported these violations to his employer. Did Sunny violate the Code and Standards?
选项：
A. No, because he warned Tony to stop violations by email.
B. Yes.
C. No, because he reported these violations to his employer.
解释：
B is correct.
According to Standard IV(C) Responsibilities of Supervisors, warning employee and Reporting to employer are not enough for Sunny, he should take further steps to prevent more violations.
老师，如果上司通过邮件警告下属停止写报告，还不能制止下属，那应该采取什么样的措施呢
