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': 'Study time, place, and person of a disease is__________study - \nSelect and explain. \nA. Descriptive, B. Analytic, C. Association, D. Comparison', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Descriptive", 'role': 'assistant'}]