Which of the Following Is NOT an Option After Learning

Which of the following is NOT an option after learning that a colleague has engaged in unethical behavior?

A) Informally approaching the colleague to try to resolve the problematic behavior
B) Bringing unethical behavior to the attention of one's supervisor
C) Bringing unethical behavior to the attention of the colleague's clients
D) Reporting unethical behavior to the state licensing board
E) Bringing the unethical conduct to the attention of the general public (whistle-blowing)