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': 'The Fourth stage of demographic cycle is know as \nSelect and explain. \nA. Low stationary, B. Late Expanding, C. High stationary, D. Declining', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]