This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: mycology, Subject name: Microbiology
[{'content': 'Ectothrix is due to \nSelect and explain. \nA. Trichophyton tonsurans, B. Microsporum audounii, C. Trichophyton schoenleinii, D. Trichophyton violaceum', 'role': 'user'}, {'content': 'Answer: B \nExplanation: EctothrixEndothrix*Trichophyton mentagrophytes*Microsporum canis*Microsporum gypseum*Microsporum audouinii*Trichophyton verrucosum*Trichophyton rubrum*Trichophyton schenleinii*Trichophyton tonsurans*Trichophyton violaceum*Trichophyton soudanese(Jagdish Chander- Text book of Medical Mycology 3rd edition, p127)', 'role': 'assistant'}]