You have been with the organization for some time. You find a clear violation of the professional code of ethics occurring frequently even after discussing it with your supervisor. As a professional, you may (check any that applies):

(A) ignore the violations. You are not the one doing that.
(B) document the infractions and communications to use if or when needed.
(C) blow the whistle after all internal avenues fail to stop the violations
(D) look for an other group or employer and leave as soon as you can.

The most applicable answer is (C) blow the whistle after all internal avenues fail to stop the violations

Explanation:

However, before whistle blowing, as a professional adhering to a stringent code of ethics that is there to protect the stake holders and the professional reputation of the members, you must always try to resolve the matter internally without exposing it to the general public, as it is unfair to disrepute an entire organization because of a few corrupt people.

If this is difficult, then u should go to the relevant national authorities and try try to legally fave the issue. If that is not working, then u should blow the whistle.