A Client Arrives Unconscious in the Emergency Department in Respiratory

A client arrives unconscious in the Emergency Department in respiratory depression from an unknown drug overdose.To help diagnose the overdose, the client is given small doses of naloxone.The purpose of this treatment is:

A) To help wake up the client to obtain the name of the drug.
B) To prevent vomiting while the client is unconscious.
C) To help diagnosis if the overdose was an opioid drug.
D) To reduce the psychoactive effects of the drug overdose.