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': 'MCH care is assessed by \nSelect and explain. \nA. Death rate, B. Birth rate, C. Maternal mortality rate, D. Anemia in pregnancy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]