This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
[{'content': 'An addict develops delusion, misleading hallucination of sight and hearing and the feeling of creeping things of "grains of sand" in the skin,he is addicted is - \nSelect and explain. \nA. Heroin, B. Methadone, C. Cocaine, D. Amphetamines', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]