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': 'Isolation as a method of a control is infection in which of the following disease ? \nSelect and explain. \nA. Diphtheria, B. Plague, C. Mumps, D. All', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'a' i.e., Diphtheria; 'b' i.e., Plague; 'c' i.e., Mumps", 'role': 'assistant'}]