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': 'Who among the following discovered small pox vaccination? \nSelect and explain. \nA. John Hunter, B. Louis Pasteur, C. Edward Jenner, D. James Lind', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Edward Anthony Jenner was an English physician who was the pioneer of smallpox vaccine. He is often called "the father of immunology". Ref: Park, 21st Edition, Page 6.', 'role': 'assistant'}]