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 of the following diseases have incubation period <10 days - \nSelect and explain. \nA. Cholera, B. Influenza, C. Plague, D. All', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'a' i.e., Cholera; 'b' i.e., Influenza & 'c' i.e., Plague", 'role': 'assistant'}]