This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Opioid-Related Disorders, Subject name: Psychiatry
[{'content': 'Method of Substance use shown in Figure is mainly used for \nSelect and explain. \nA. Ganja, B. Bhang, C. Charas, D. Cocaine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Cocaine (Method shown: Snorting)', 'role': 'assistant'}]