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: Microbiology
[{'content': 'Dermatophyte which does not involve nail \nSelect and explain. \nA. Trichophyton, B. Microsporum, C. Epidermophyton, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Trichophyton - Infect skin, Hair and nail.\nMicrosporum - Infect skin, Hair.\nEpidermophyton - Infect skin, Nail.', 'role': 'assistant'}]