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 frequent cause of neonatal thrombocytopenic purura is – \nSelect and explain. \nA. Infection, B. Drug idiosyncrasy, C. Large haemangiomas, D. Erythroblastosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Amongst the given options, only infection causes neonatal thrombocytopenia', 'role': 'assistant'}]