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': 'Painful nodule on the scalp with hair loss in a 10 year old is best treated by: March 2013 \nSelect and explain. \nA. Ketaconazole, B. Griseofulvin, C. Amphotericin B, D. Antifungal shampoo', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B i.e. Griseofulvin The presentation is suggestive of kerion (Tinea capitis)', 'role': 'assistant'}]