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': 'Myringitis bullosa is caused by - \nSelect and explain. \nA. Common causes of otitis externa -, B. Fungus, C. Bacteria, D. Virus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Myringitis bullosa hemorrhagica is a painful condition.\nIt is characterized by formation of hemorrhagic blebs on tympanic membrane and deep meatus. It is probably caused by virus or\xa0mycoplasma pneumoniae\n(Dhingra 6/e, p 62) but according to Turner 10/e p 323', 'role': 'assistant'}]