This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Medicine
[{'content': 'First line drug used for painful diabetic neuropathy is? \nSelect and explain. \nA. Carbamazepine, B. Duloxetine, C. Venlafaxine, D. EMLA', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) DuloxetineRef: Harrison 18/e, chapter 384', 'role': 'assistant'}]