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': 'Certificate for vaccination during international travel is required in case of \nSelect and explain. \nA. Japanese Encephalitis, B. Cholera, C. Yellow fever, D. Yellow severe and Cholera', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]