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': 'Application of Incubation period is all except ? \nSelect and explain. \nA. To differentiate co-primary cases from secondary cases, B. To find out time for isolation, C. To find out time for Quarantine, D. To prevent infection to the contacts of the infected person', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans is \'b\' i.e. To find out time for isolation "The duration of isolation is determined by the duration of communicability of the disease and the effect of chemotherapy on infectivity."- Park', 'role': 'assistant'}]