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: Skin
[{'content': 'DOC for dermatitis herpetiformis is: \nSelect and explain. \nA. Steroids, B. Dapsone, C. PUVA, D. Antihistaminic', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Dapsone', 'role': 'assistant'}]