please indicate which of the following statement $($s$)$ is true? a$/$ human resouces must promise not to disclose anything about your complaint to the person who is harassing you$/$ b$/$harassment investigations must be handled confidentially to the extend possible, but complete confidentiality is never guaranteed. c$/$all parties to a a complaint, including witnesses, are protected from retaliation by company policy and by law. d$/$to be valid, your complaint must follow the chain of command and you should always report the incidents to your immediate supervisor first.