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: Social & Preventive Medicine
[{'content': 'All are common causes of maternal moality except? \nSelect and explain. \nA. Post-paum hemorrhage, B. Infection, C. Cardiac failure, D. Anaemia', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Cardiac failure", 'role': 'assistant'}]