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 growth pattern of a population with an annual growth rate of 1.5% to 2.0% is - \nSelect and explain. \nA. Slow growth, B. Moderate growth, C. Rapid growth, D. Very rapid growth', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]