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: Dental
[{'content': 'Which of the following regarding Maternal Mortality Rate (MMR) is not true: \nSelect and explain. \nA. Numerator includes total number of female deaths within 42 days of delivery, B. Denominator includes still births and abortions, C. It is actually expressed as a ratio and not rate, D. It is most common indicator for obstetric care', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]