This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: International health agencies, Subject name: Social & Preventive Medicine
[{'content': 'Quarantine was originally introduced as a protection against: \nSelect and explain. \nA. Plague, B. Tuberculosis, C. AIDS, D. Malaria', 'role': 'user'}, {'content': 'Answer: A \nExplanation: In 14th century, quarantine was introduced in Europe to protect against transmission of plague. Ships, crews, travellers were detained for a 40 day period. Also remember, list of Quarantinable diseases are: Diphtheria Infectious tuberculosis Plague Small pox Yellow fever SARS Viral hemorrhagic fever Cholera Flu', 'role': 'assistant'}]