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: ENT
[{'content': 'A female diabetic having severe ear pain, granulation tissue in external auditary canal and facial palsy is due to - \nSelect and explain. \nA. Malignant otits externa, B. Herpes zoster otitis, C. Otomycosis, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]