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: Pediatrics
[{'content': 'Most common cause of hydrocephalus in children is – \nSelect and explain. \nA. Post inflammatory obstruction, B. Buddchiary syndrome, C. Brain tumour, D. Perinatal injury', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer of this question is none because :-\n\n\nMC cause of obstructive (non-communicating) hydrocephalus --> aqueductal stenosis.\n\n\nMC cause of non-obstructive (communicating) hydrocephalus subarachanoid hemorrhage.\nBut, amongst the given options best answer is option \'a\'.\n\n"A common cause of acquired hydrocepahalus, is post inflammatory obstruction. Bacterial and tuberculous\xa0meningitis have a propensity to produce thick tenacious exudate that obstructs the basal cisterns ".', 'role': 'assistant'}]