This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Forensic Medicine
[{'content': 'what is the most commonly abused substance which course dependence \nSelect and explain. \nA. Cocaine, B. Heroin, C. Amphetamine, D. cannabis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Dependence causing potential is higher with heroin compared to other drugs ,cannabis the among the list. ref : narayana reddy', 'role': 'assistant'}]