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': 'Which form of plague can spread from person to person? \nSelect and explain. \nA. Bubonic plague, B. Pneumonic plague, C. Septicaemic plague, D. None of the above.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In cases of bubonic plague, bacilli are locked up within the lymph nodes and are not infective. Pneumonic plague is highly infectious and spreads from person to person through droplet method. Ref: Park 21st edition: page 270.', 'role': 'assistant'}]