This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiological Study, Subject name: Social & Preventive Medicine
[{'content': 'Father of Epidemiology is: \nSelect and explain. \nA. Hippocrates, B. John Snow, C. Ambroise Pare, D. Rudolf Virchow', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) John SnowRef: K. Park 23rd ed. / 5-6* Father of public Health: Cholera* Father of modern epidemiology: John Snow* Father of Medicine/first true epidemiologist: Hippocrates.', 'role': 'assistant'}]