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: Pharmacology
[{'content': 'Sibutramine is indicated for: \nSelect and explain. \nA. Smoking cessation, B. Obesity, C. Severe weight loss, D. Mania', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]