A 29-year-old man with opioid use disorder, injecting fentanyl daily, presents requesting help. He has had multiple overdoses. According to Canadian opioid agonist treatment guidance, what is the most appropriate first-line management strategy?AAbrupt abstinence without medicationBLong-term naltrexone implant onlyCInitiation of opioid agonist therapy such as buprenorphine-naloxone or methadoneDShort-term benzodiazepines for withdrawalENo pharmacologic treatment is recommendedCheck my answer