This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of health and disease, Subject name: Social & Preventive Medicine
[{'content': 'The father of modern epidemiological surveillance is \nSelect and explain. \nA. William Farr, B. James Lind, C. Edwin Chadwick, D. Pettenkofer', 'role': 'user'}, {'content': 'Answer: A \nExplanation: William Farr is often referred to as the father of modern epidemiological surveillance. Textbook on Public Health and Community Medicine pg: 14.', 'role': 'assistant'}]