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': 'Amotivational syndrome is seen with: Maharashtra 10; NEET 13 \nSelect and explain. \nA. Heroin, B. Cannabis, C. Cocaine, D. Clonidine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Cannabis', 'role': 'assistant'}]