This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
[{'content': 'Picket-fence graph of temperature is seen in: \nSelect and explain. \nA. Otitic hydrocephalous, B. Lateral sinus thrombosis, C. Extradural abscess, D. Meningitis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Diurnal spikes of fever of 104deg or 105deg F are typical of lateral sinus thrombosis. Due to use of antibiotics, this picture is not seen in all patients of sinus thrombosis these days. There is fever in meningitis and extradural abscess but it does not show diurnal spikes.', 'role': 'assistant'}]